In the figure here, a stationary block explodes into two pieces Land R that slide across a frictionless floor and then into regions with friction, where they stop. Piece L, with a mass of 3.4 kg. encounters a coefficient of kinetic friction ₁-0.59 and slides to a stop in distance di -0.47 m. Piece Rencounters a coefficient of kinetic friction UR -0.35 and slides to a stop in distance de-0.31 m. What was the mass of the block? Number i -H₂ |--₂--| Unit μ-0 -HR

In the figure here, a stationary block explodes into two pieces Land R that slide across a frictionless floor and then into regions with friction, where they stop. Piece L, with a mass of 3.4 kg. encounters a coefficient of kinetic friction ₁-0.59 and slides to a stop in distance di -0.47 m. Piece Rencounters a coefficient of kinetic friction UR -0.35 and slides to a stop in distance de-0.31 m. What was the mass of the block? Number i -H₂ |--₂--| Unit μ-0 -HR

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter11: Collisions

Section: Chapter Questions

Problem 47PQ

See similar textbooks

Similar questions

You hold a slingshot at arms length, pull the light elastic band back to your chin, and release it to launch a pebble horizontally with speed 200 cm/s. With the same procedure, you fire a bean with speed 600 cm/s. What is the ratio of the mass of the bean to the mass of the pebble? (a) 19 (b) 13 (c) 1 (d) 3 (e) 9
Two blocks of masses m and 3m are placed on a frictionless, horizontal surface. A light spring is attached to the more massive block, and the blocks are pushed together with the spring between them (Fig. P8.7). A cord initially holding the blocks together is burned; after that happens, the block of mass 3m moves to the right with a speed of 2.00 m/s. (a) What is the velocity of the block of mass m? (b) Find the systems original elastic potential energy, taking m = 0.350 kg. (c) Is the original energy in the spring or in the cord? (d) Explain your answer to part (c). (e) Is the momentum of the system conserved in the bursting-apart process? Explain how that is possible considering (f) there are large forces acting and (g) there is no motion beforehand and plenty of motion afterward? Figure P8.7
Check Your Understanding There is a second solution to the system of equations solved in this example (because the energy equation is quadratic): v1.f=-2.5m/s , v2.f=0 . This solution is unacceptable on physical grounds; what’s with it?
In the figure here, a stationary block explodes into two pieces L and R that slide across a frictionless floor and then into regions with friction, where they stop. Piece L, with a mass of 3.3 kg, encounters a coefficient of kinetic friction μL = 0.45 and slides to a stop in distance dL = 0.41 m. Piece R encounters a coefficient of kinetic friction μR = 0.37 and slides to a stop in distance dR = 0.30 m. What was the mass of the block?
A block A, of mass m = 10 Kg, compresses a spring of constant K = 1000 N / m in a length x = 3 cm. Starting from rest, the block is released, which moves from that moment on a horizontal surface without friction until it collides with another block B of mass m = 40 Kg, which was at rest. (Perfectly inelastic shock) and together they go up the channel (inclined surface) without friction, to later continue along a second horizontal plane without friction, at a height h with respect to the first (see Figure). Determine the energy variation that occurs in the collision .
A 480-kg car moving at 16.4 m/s hits from behind a 570-kg car movingat 13.3 m/s in the same direction. If the new speed of the heavier car is 14.0 m/s,(a) what is the speed of the lighter car after the collision, assuming that anyunbalanced forces on the system are negligibly small, and(b) what average power is dissipated during the collision if they collide for 1.4seconds?
A small block of mass m = 3.00 kg starts from rest and slides down a rough 30.0° incline from a height of h=3.60m. The coefficient of kinetic friction between the block and the incline is μk = 0.20. At the bottom it strikes a big block of mass M = 12.0kg, which is at rest on a horizontal frictionless surface. The collision is elastic.
In the figure, block 1 of mass mi slides from rest along a frictionless ramp from height h = 2.7 m and then collides with stationary block 2, which has mass m2 = 2m1. After the collision, block 2 slides into a region where the coefficient of kinetic friction k is 0.55 and comes to a stop in distance d within that region. What is the value of distanced if the collision is (a) elastic and (b) completely inelastic?
A basketball of mass 0.6kg is dropped from rest. Just before striking the floor, it has a momentum whose magnitude is 3.1kgm/s. At what height was the basketball dropped?
For each run, determine the kinetic energy (KE = ½ m v2) of the cart just before and after the collision. Enter the values in the Table. Is KE conserved?
A bullet of mass 9 g moving with an initialspeed 300 m/s is fired into and passes througha block of mass 3 kg, as shown in the figure.The block, initially at rest on a frictionless,horizontal surface, is connected to a spring offorce constant 976 N/m. a) If the block moves a distance 3.6 cm to theright after the bullet passed through it, findthe speed v at which the bullet emerges fromthe block.Answer in units of m/s. b) Find the magnitude of the energy lost in thecollision.Answer in units of J. I'm lost on how to answer the a-section of this question and wasn't able to reach the b-section.
It is assumed that each of the two automobiles involved in the collision described in Prob. 14.35 had been designed to safely withstand a test in which it crashed into a solid, immovable wall at the speed v0 The severity of the collision of Prob. 14.35 may then be measured for each vehicle by the ratio of the energy it absorbed in the collision to the energy it absorbed in the test. On that basis, show that the collision described in Prob. 14.35 is (mA.mB)2 times more severe for automobile B than for auto mobile A.Reference to Problem 14.35:Two automobiles A and B , of mass mA and mB , respectively, are traveling in opposite directions when they collide head on. The impact is assumed perfectly plastic, and it is further assumed that the energy absorbed by each automobile is equal to its loss of kinetic energy with respect to a moving frame of reference attached to the mass center of the two-vehicle system. Denoting by EA and EB , respectively, the energy absorbed by automobile A and by…