A block of mass m is initially sliding with speed v on a horizontal frictionless surface. 1 is moving with speed v 1 to the right on a horizontal frictionless table as shown in the gure above. 4J none of these answers 0 40. A block sliding along a horizontal frictionless surface with speed v collides with a spring and compresses it by 1. The blocks collide, and after the collision, Block A is moving in the negative direction at a speed 21v. Question: 2. A block of mass m lies on a horizontal frictionless surface and is attached to one end of a horizontal spring (spring constant k) whose other end is fixed. 70 m/s m 11. A block with mass m is sliding with speed v0 on a surface that is so slippery it can be considered to be frictionless. 260, how far does the block travel up the incline? 5. F B. 1° from the negative x-direction as shown. A block (mass = 4. 3m 6. air track. Afterthe collision, as the block slides up the ramp, the ramp also starts sliding to the right as well. T. 9 kg. How does the kinetic energy of the two-block system after the collision compare with its kinetic energy before the collision, and why? A small block of mass m m m is given an initial speed v 0 v_0 v 0 up a ramp inclined at angle θ \theta θ to the horizontal. Block A has mass 2 m and is traveling at speed v in the positive direction. Part A. 950 m/s on a frictionless horizontal surface until it encounters a spring with a force constant of 891 N/m. 0 J QUESTION 17 Block A has mass 2. The spring has a stiffness k. It strikes a spring of constant k attached to a rigid wall, as shown in the figure. Fo -at Fo +t) +t) ma a ma. 32 kg sliding on a frictionless, horizontal surface. The correct expression for the distance, x is: A block of mass m slides along a horizontal frictionless surface with an initial speed v 0 . The coefficient of friction between the block and the wall is u; therefore, the speed v of the block decreases. V. 0 kg is sliding down on a frictionless inclined surface with an initial speed of v0 =2m/s from height h=3 m. The three forces acting on the A 3. uncompressed at the time of the collision. In the diagram below, a block of mass M initially at rest on a frictionless horizontal surface is struck by a bullet of mass m moving with horizontal velocity v. t = 0. Determine the final compression x A block of mass 2. (A) Draw a diagram which shows the block Experiment 1. 00 kg) move on a frictionless, horizontal surface. The coefficient of kinetic friction between the ramp and box is 𝜇. On a frictionless horizontal surface, block A of mass m= 1. Block A has mass 3m and is initially moving in the positive x-direction with speed v. Yes b. The coefficient of kinetic friction between the ramp and the box is mu = 0. (K/m)1/2 Here’s the best way to solve it. A 1. 0 m/s^2 to the left. There’s just one step to solve this. 50 kg) and B (mass 9. The block is initially at rest on a frictionless surface and is connected to a spring with force constant of k (see the figure below). The same as the change in momentum of block A. rough surface frictionless surface The coefficient of kinetic friction between the ramp and the box is u = 0. The other end of the rod is attached to a frictionless pivot. of the masses 2. 2 kg starts at rest on a rough inclined plane a height H 9 m above the ground. Block B has mass mand is initially moving with speed 201 at an angle of 53. The block slides up an incline with a base length **8 m and vertical length y = 6 meters. A small block of mass m slides on a horizontal frictionless surface as it travels around the inside of a hoop of radius R. 6 N. The block's mass is m = 4. Find the maximum compression of the spring Figure A mass m slides along a frictionless horizontal surface at speed v_o. The two blocks together temporarily undergo SHM A mass is sliding on a frictionless surface with a speed v. In the figure, a block of mass m is moving along the horizontal frictionless surface with a speed of 5. 70 kg block slides with a speed of 0. What will be the compression if the same block collides with the spring at a speed of 5 v? Express your answer to two significant figures and include the appropriate units. After the collision the small block is at rest and the larger block is moving to the right with speed V/2. 0-kg mass initially at rest as shown in the figure. Here’s the best way to solve it. If the spring has stiffness constant k, determine the coefficient of kinetic friction between block and surface. "? A block of mass m is initially at rest on a frictionless surface at the origin. 50 kg, move along a frictionless track with a speed of v1 = 21 m/s. Blocks B and C are initially at rest. 0° and the coefficient of kinetic friction between the block and the incline is 0. What will be the compression if the same block collides with the spring at a speed of 4v? Express your answer to two significant figures and include the appropriate units. The two blocks collide and stick together. Both blocks stick together as a result of the collision. 60. In the diagram below, a block of mass initially at rest on a frictionless horizontal surface is struck by a bullet of mass moving with horizontal velocity (m/m+M)v Base your answers to questions 10 and 11 on the diagram below which represents two objects at rest on a frictionless horizontal surface with a spring compressed between them. 0 kg is sliding along a horizontal frictionless surface at a speed vi=4. 0-kg mass initially at rest. As shown in the figure below, a box of mass m = 7. a. It then compress a spring of spring constant k. The coefficient of kinetic friction between the ramp and box is μ. (A) Draw a diagram which shows the block A block of mass m is initially moving to the right on a horizontal frictionless surface at a speed v. 0-kg block slides along a frictionless surface with a constant speed of 5. If the maximum distance the block slides from the equilibrium position is equal to 20 cm, what is the speed of the block at an instant when it is a distance of 16 cm from the equilibrium. What will be the compression if the same block collides with the spring at a speed of 2v? A block of mass M is traveling on a horizontal frictionless surface at a velocity V, before colliding with a spring. 11 m O 1. It collides with a stationary block of mass 8,00 kg. 0\ cm$$ and negligible mass. On a frictionless horizontal surface, block A of mass m = 1. The block is initially sliding on a horizontal frictionless surface with speed v. The force is removed eight seconds later. 90 kg, the magnitude of the applied force is F = 24. The coefficient of friction between box and block are μ s and μ k. You now apply the same constant force to both blocks for exactly one second. Initially, the puck has a speed of v = 4. After the collision, as the block slides up the ramp, the ramp also starts sliding to the right as well. 13 m/s. The block is set into oscillatory motion by stretching the spring and releasing the block from rest at time . 92 m/s. The rod is free to rotate in a vertical plan without friction about a horizontal axis through its center. 11. This system then runs into an ideal spring of force constant (spring constant) k = 50. 30 kg is placed on a frictionless table and is attached to one end of a horizontal spring of spring constant . It then compresses a spring of spring constant k. The two blocks stick together and move with a speed of V/3. 4 m/s. At the instent when the KE of the block equal to PE of spring, the spring is compressed a distance of ? A block of mass m slides along a horizontal frictionless surface with an initial speed v 0 . V/t graph. Then, the block slides up a rough ramp that has an incline angle of θ. 7 kg block slides on a horizontal, frictionless surface until it encounters a spring with a force constant of 955 N/m. A block of mass m sliding along a rough horizontal surface is traveling at a speed v0 when it strikes a massless spring head-on and compresses the spring a maximum distance X. The speed of the block of mass m after the collision is {Blank}. A cord initially holding the blocks together is burned; after this the block of mass 2M moves to the right (the Physics. The masses stick together and slide up a frictionless circular track of radius 0. The coefficient of kinetic friction between the box and the floor is µk. Block B has mass m and is traveling at a speed 2v in the negative direction. , A box sliding on a frictionless surface collides and sticks to a A block (mass = 4. After a completely elastic encounter with the ; A 1. (Figure 1) shows a block of mass m sliding along a frictionless surface with speed vm. 0 m/s as shown. The block is released, and it moves back and forth on the end of the spring Provide During its motion, what A block of mass m moving on a frictionless surface with a speed of v_i = +9. v f = 2. A small block of mass m slides to the left on a frictionless, horizontal surface with speed v. A block of mass m has a spring with spring constant k attached as shown below. After the collision, Block 1 keeps sliding forward with a small velocity vf = 0. 5 m. 4 cm. This sliding block collides with an identical block at rest that is backed by an ideal spring at equilibrium length. The mass collides with another mass, m, and rebounds with velocity -1 m/s. The block collides with a spring and comes to rest when the spring is compressed to the maximum value. It is brought to rest in compressing a spring in its path. Calculate x(t) and v(t). In part (a) we implicitly chose the zero of gravita tional potential energy to be at the horizontal surface. Block 1 with mass m1+2. In terms of m, R. 0 kg is moving on a frictionless horizontal surface with a velocity of 1. Blocks A (mass 3. According to the law of conservation of momentum= total init Mass M moves to the right with speed =v along a frictionless horizontal surface and crashes into an equal mass M initially at rest. What are these values when (a) t is very small, and (b) t is very large? Simple Harmonic Motion: Plate, Block, and Spring A flat plate P of mass 5. What will be the compression if the same block collides with the spring at a speed of 5v? Physics. 0 N for a distance of 6. At the instant when the kinetic energy of the block is equal to the potential energy of the spring, the spring is compressed a distance of A vm/2k YOU MISSED vym/k v/m/4k D mv2/4k YOUR ANSWER Two $$2. What is the velocity of block B after the collision ? a) 0 m/s b) V c)1/2/V d) 1/3 V e) 2/3V A projectile with explodes Physics questions and answers. A block, with a mass, m, moves initially to the right on a frictionless horizontal surface with a speed, v. What is the velocity of the bullet-block system after the bullet embeds itself in the block? 2. 0 kg is sliding along a horizontal frictionless surface at a speed v; = 7. 00 m/s. The box comes momentarily to rest after compressing the spring some amount x. (a) If the incline is frictionless, the block momentarily comes to rest at point P. Supporting Materials. A light spring is attached to one of them, and the blocks are pushed together with the spring between them, as seen in the figure below. The blocks are equipped with ideal s; Two blocks, each with a mass = 0. 6 cm. 6) If the blocks collide and stick together, what is the final velocity of the two blocks? v f = 1. a small block of mass m slides on a horizontal frictionless surface as it travels around the inside of a hoop of radius R. 0 m along the surface, the block encounters a frictionless ramp inclined at angle θ to the horizontal. 0 kg rests on the plate and the coefficient of static friction between the block and the plate is µ= 0. (A) Draw a diagram which shows the block Mar 10, 2018 · A 0. It collides with a block of mass M that is hanging as a pendulum on a massless rod of length L. It is held in a circular orbit about a fixed axis by a rod with negligible mass and length R = 1. Blocks A, B, and C are aligned along a straight line on a horizontal frictionless surface. 10 m/s when it encounters a ramp inclined at an angle of θ=26. The sliding block collides with a second stationary block with mass 4m. 0 degree. A 3. It collides with an ideal, massless spring which is attached to a block of mass M 2 which is initially at rest. If the spring constant is K, what is the maximum compression in the spring? A. Km Vo C. 12 m/s Two identical blocks, B having twice the mass of A, are initially at rest on frictionless air tracks. R 1976M1. 2. It slides down the plane, across a frictionless horizontal floor, and then around a frictionless loop-the-loop of radius R 2. 72 m. 007. Question: As shown in the figure below, a box of mass: m = 23. 20 m/s, makes a perfectly elastic collision with a block of mass M at rest After the collision, the 8 40 block recoils with a speed of 0. It depends on V. 4. 5 °. A small block of mass 𝑚 slides to the left on a frictionless, horizontal surface with speed 𝑣 . 5kg is at rest. How do you qualify the following statement: "The net work done by gravity on the block between the first and second ramp is positive. At time t-0, a decreasing force given by F= Foeet is applied on the block, where a is a constant. 5 kg moving with speed vA = 3. Afterwards, block 2 collides elastically with a wall. v f = 1. If the maximum distance the block slides from the equilibrium position is equal to 20 cm, what is the speed (in m/s) of the block at an instant when it is A block of mass M 1 slides on a horizontal, frictionless surface with a velocity of V 1. 0 N/cm(5000 N/m) a) (2 points) State the Step 1. Block 1 of mass m1 and block 2 of mass m2 are sliding along the same line on a horizontal frictionless surface when they collide at time tc. At time t=0, a force given by is applied. 221 kg, can slide without friction on a horizontal surface. At the instant when the kinetic energy of the block<br />is equal to the potential energy of the spring, the spring is compressed a distance of: v square root (m/2k) is the answer. A block of mass m slides on a frictionless, horizontal surface with speed v. A block of a mass m is initially moving to the right on a horizontal frictionless surface at a speed. The graph above shows the velocities of the blocks as a function of time. Both blocks stick together and continue sliding with speed v. As shown in the figure below, a box of mass m=36. Then compresses a spring of spring is constant. 0 m/s when it collides with a 1. At the instant when the kinetic energy of the block is equal to the potential energy of the spring, the spring is compressed a distance of: Science. 18 A small block of mass m on a horizontal frictionless surface is attached to a horizontal spring that has force constant k. After sliding a distance 2. The block is initially at rest at the position where the spring is unstretched (x = 0) when a constant horizontal force 𝐹 in the positive direction of the x axis Jul 15, 2019 · A man of mass m moves with a constant speed on a plank of mass 'M' and length 'L' kept initially at rest on a frictionless horizontal surface, asked Jul 31, 2019 in Properties of solids and liquids by piya ( 79. Question Details OSColPhys1 7. What impulse was delivered to mass m? A wood block rests at rest on a table. (a) (7 points) Is momentum conserved in the collision? Explain. 1. WA. The magnitude of the average force Transcribed Image Text: OLktisqw/formResponse A block of mass m is initially at rest on a frictionless horizontal plane surface. During this SHM the blocks: compress the spring, come to a momentary stop, start moving in the opposite. 25 m/s. 40 kg is sliding across a horizontal frictionless surface with an initial speed v; = 2. Block A with a mass m moves on a frictionless horizontal surface at a constant velocity v and collides elastically with an identical block B, which is initially at rest. To what maximum height, b, above the horizontal surface will the masses slide? 0,40 m ID A block of mass M slides on a frictionless surface with an initial speed of v 0. The block slides a distance d along the ramp before momentarily coming to rest. In terms of mass m, mass M is most nearly Select one: a. Two $$2. It then compresses a spring of spring constant k. 0 kg that is initially at rest, as shown in the figure. (b) How far does the block travel up the incline before starting to slide back down? At the top of its trajectory, the block will be momentarily at rest. 40 m. At the instant when the kinetic energy of the block is equal to the potential energy of the spring, the spring is compressed a distance of: v Squareroot m/2k A block of mass m is initially moving to the right on a horizontal frictionless surface at a speed v. m/2 c. Science. 18 m/s (b) magnitude of the tension . Initially, block B is at rest and block A is moving toward it at 4. (16 pts) A block of mass m 2. 00\ kg$$ balls are attached to the ends of a thin rod of length $$50. Question: A block sliding along a horizontal frictionless surface with speed v collides with a spring and compresses it by 1. Block A has a mass m = 2kg and is initially moving to the right with a speed of v = 5m/s. The figure below represents a small, flat puck with mass m = 2. Express your answer in terms of the relevant Transcribed image text: Gu v Block A Block B Block C 28. 16 m, pivoted at one end. Since there is no friction s. 2m d. The spring constant of the spring fixed at one end is 100 N/m. The student gives the assembly a rotation in the vertical plane and A block of mass 2 kg travels along a horizontal frictionless surface with velocity 3 m/s. It collides with a 2. The acceleration of the block is most nearly. 0 kg block is sliding with a speed of 4. 0704 and the box slides a distance d up the ramp before coming momentarily to rest. 6 kg attached to the ends of a rod of negligible mass. 0 kg) sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (k = 100 N/m) which has its other end fixed. 2 m and the spring has spring constant k A block with a mass m1= 5 kg is sliding to the right with a speed of 15 m/s when it. Δ x =. The horizontal surface is frictionless. The masses of the blocks are M, 2M, and 3M, respectively. The acceleration due to gravity is 𝑔. The collision is one-dimensional. Point P on the ramp is at the center point of the ramp. 0 cm. Find the initial speed of the block (ignore air resistance and any energy lost when the block initially contacts the spring). A block with mass i sliding with speed on a horizontal surface that is so slippery it can be considered to be frictionless, collides with another block with mass 7m. 100% (1 rating) (a) speed . H, and v, find expressions for each of the following. 400 m/s In the figure, the blocks are in contact for 0 200 s. F A. Notice that v and V denote different speeds. 2 m; 200 m Two blocks are free to move on a horizontal frictionless surface. Feb 10, 2021 · The block shown in the figure is sliding along a frictionless horizontal surface. Two blocks are sliding towards each other on a frictionless horizontal surface. A block of mass m =3. 0 N, and the angle of the applied force F. 0° O 7. What is the speed of the block when it passes the point A? angle theta= 25 degrees. Answer following questions Here’s the best way to solve it. 70 m/s. 60-kg block initially at rest on a frictionless horizontal surface is acted upon by a force of 4. 10 m/s when it encounters a ramp inclined at an angle of 8 = 21. The masses stick together and slide up a frictionless circu; As shown in the figure below, blocks A (2 kg) and B (11 kg) is initially moving along a frictionless surface. A block sliding along a horizontal frictionless surface with speed v collides with a spring and compresses it by 2. 00 kg is sliding along a horizontal frictionless surface with a speed of 2. In the figure, a block of mass m is moving along the horizontal frictionless surface with a speed of 4. The maximum compression of the spring and velocity of block as it returns to the original position respectively are As shown above, a block with a mass of m slides at a constant velocity Vo on a horizontal frictionless surface. What is the kinetic energy of the combined object immediately after the collision? 48. May 10, 2023 · A block of mass m is initially moving to the right on a horizontal frictionless surface at a speed v. hits and sticks to a block of mass m2 = 3kg , , attached to a spring of spring constant k= 3000 n/m. 0704 and the box slides a distance d up the Question: block of mass m sliding horizontally on a frictionless surface with initial speed vi collideswith a ramp of mass M initially at rest. PROBLEM 2 - A block with mass 5. 15 m/s when it encounters a ramp inclined at an angle of theta = 27. Express your answer in terms of the relevant variables. The spring has spring constant k. The kinetic energy of the block is equal to the potential energy of the spring, when the spring is compressed a distance, x. Upon colliding, the two masses stick together and move with speed V to the right. A block of mass 𝑚 sliding horizontally on a frictionless surface with initial speed 𝑣 collides with a ramp of mass 𝑀 initially at rest. 0 kg is attached to a spring of spring constant k = 60 N/m and executes horizontal simple harmonic motion by sliding across a frictionless surface. It travels a distance d d d up the ramp and comes to rest. Block A is initially moving to the right along the same line at a speed v, as shown in the figure above. Question: [1] A 4. VoK/m D. P. in the cord 33. If the force constant of the spring is 400 N / m, by how much the spring will be compressed? 20 m; 2 × 10 − 2 m; 0. No c. [2611973] - Physical Constants A box of unknown mass is sliding with an initial speed across a horizontal frictionless warehouse floor when it encounters a r ough section of Physics questions and answers. A block of mass m, initially held at rest on a frictionless ramp a vertical distance H above the floor, slides down the ramp and onto a floor where friction causes it to stop a distance r from the bottom of the ramp. 0 kg lump A block sliding along a horizontal frictionless surface with speed v collides with a spring and compresses it by 1. (A) Draw a diagram which shows the block Step 1. The other end of the spring is attached to a fixed wall. Viis not large enough for the block to 9. k, as shown above. 0 m. A block of mass 0. If the slope is 11. How much is the spring compressed? A 18kg block is sliding on a frictionless surface at a speed of 17cm/s. 𝑣 is not A block of mass m slides with a speed Vo on a frictionless surface and collides with another mass M which is initially at rest. 15) What is the common speed V c that the two masses (and spring) will be moving when the spring Study with Quizlet and memorize flashcards containing terms like A block having mass M slides on a frictionless surface and collides with a block of mass 2M which is initially at rest. 00 kg is set in motion and the block with mass 5. The block is pushed against the spring, compressing the spring a distance d. On the floor the speed of the block is observed to be 12 Ill//s. Take the system to consist of both masses. Take both blocks to be the "system" and assume that no net external force acts on it. On top of block is a small box of mass m. 21 m O 5. The spring has a spring constant of k=175 N/m. What is the height ℎ of the Physics questions and answers. Find how much the spring is compressed at the instant when the kinetic energy of the block is equal to the potential energy of the spring. Problem 2 Two blocks are sliding on a horizontal frictionless surface. v. The acceleration due to gravity is g. nice question, …. 0 J 32. 6º. The graph shows how the force on the block varies with time. Physics questions and answers. 0 m/s on a horizontal frictionless surface. How much kinetic energy does the block gain? Transcribed image text: Exercise 7. 9k points) Initially, Block 1 with mass m1=1kg is moving on a frictionless table with velocity v1=1m/s and block 2 with mass m2=0. Find an expression for them that will allow the pendulum to barely go over the top Q. A block of mass m slides on a frictionless horizontal surface with speed v. Three forces act on a block labeled m that is on a horizontal surface. Question: A block of mass m is initially moving to the right on a horizontal frictionless surface at a speed v. The block collides with the free end of a spring-block system of m 2 that is initially at rest. Block 1 collides elastically with block 2. 20. As shown in the figure below, a box of mass m = 31. The coefficient of kinetic friction between the ramp and the box is μ=0. The sliding block encounters an ideal spring with force constant k. Choose the initial position of the front of the spring to be xi=0. 5 m/ssuddenly collides with and sticks to another block B of mass M = 3. Solution :-. the coefficient of friction between the block and the wall is mu; therefore, the speed v of the block decreases. The fraction of the initial kinetic energy lost during the collision is (enter your answer Physics. As a result of the collision, the block with mass 8. Step 1. A bullet shot into the block stops inside, and the bullet plus block start sliding on the frictionless Your solution’s ready to go! Our expert help has broken down your problem into an easy-to-learn solution you can count on. 0-kg mass is sliding on a horizontal frictionless surface with a speed of 3. Block 2 is fixed to a spring which was initially at rest length. 0 kg steel block is at rest on a frictionless horizontal surface. What impulse does the wall give to block 2? Question: (5) Two blocks of masses M and 2M are placed on a horizontal, frictionless surface. vf= 7. A block of mass m is initially to the right on a horizontal frictionless surface at a speed v. 00 kg recoils with a speed of 0. A plot of the resulting. 4 cm . = 15 m/s slides down a ramp of height h; = 3 m above a horizontal surface, along the horizontal surface, then up a second ramp of height hz = 5 m. Two seconds after it begins sliding, a horizontal, time-dependent force is applied to the mass. Find the expression of the position x (t) of the block as a function of time. 1i Find the velocities of block 1 and block 2 after the collision. 0 kg block that is initially at rest and the two blocks stick together. The inclined surface of the ramp is also frictionless. 22 m O 3. Tutorial. The block comes to rest after compressing the spring a distance of 4. 3. 0 m/s towards another block of equal mass kept at rest. A block of mass m slides along a horizontal frictionless surface with an initial speed v 0 . A block of mass m is initially moving to the right on a horizontal frictionless surface at a speed v. Then, the block slides up a rough ramp that has an incline angle of 𝛽. 0 kg is sliding along a horizontal frictionless surface at a speed v_1 = 7. 5 m/s suddenly collides with and sticks to another block B of mass M = 3. A motion 1. Spring Blocks Motion. 57 m/s. 025 m/s. A block of mass m = 25 k g sliding on a smooth horizontal surface with a velocity v = 3 m s − 1 meets the spring of spring constant k = 100 N / m fixed at one end as shown in figure. This system then runs into an ideal spring of force constant (spring constant) k=50. Physics. Find a formula for the coefficient of kinetic friction between the block and ramp. A bullet of mass of m is fired with a horizontal velocity v into a block of mass M. See Answer. The spring is compressed by L=1. What is the height h of the block when its speed up the ramp equals kv Transcribed image text: A block of mass m = 8 40 kg, moving on a horizontal frictionless surface with a speed 4. A block of mass 4 k g slides on a horizontal frictionless surface with a speed of 2 m / s. A block of mass M = 3 kg with an initial speed of v. A student on another planet has two identical spheres, each of mass . The change in momentum of block B is: Twice the change in momentum of block A. What is the macroscopic work done on the block by Physics questions and answers. 5 kg moving with speed vA =3. 48, how far (in m) does the block travel up the incline? Physics questions and answers. below the horizontal is 𝜃 = 32. The coefficient of friction between the block and the surface is 0. The second block was at the equilibrium position and the spring. Block B has a mass of m = 6kg and is initially not moving. in terms of m, R, mu, and v, find expressions for each of the following. Block 1 of mass m. The block collides with a block of mass 2m. a) Write a general expression for the force that the spring exerts on the mass, in term of k and x. 0 N/cm (5000 N/m). 3 m/s, makes a perfectly elastic collision with a block of mass M at rest, where M = 2m. (m/K)1/2 B. Block 1 of mass m1 slides on frictionless surface with velocity vi=10 m/s and hits block 2 of mass m2 =0. A block B of mass 2. 0 J 14. If the bullet embeds itself in the block causing the spring to compress to a . 50 m/s when it encounters a spring of constant k = 3000 N/m. m/3 b. It runs into a linear spring with a spring constant of k, which compresses from position xi to position xf. The block then compresses a spring with a spring constant, k. 75 m/s. 8∘. ga wm rz pt qb dw cb wa to hg