Momentum Term: Name: 1. What is the classical definition of momentum? a. тu?/2 b. mgy с. ту/2 d. ks?/s е. ту 2. Under what circumstances is the momentum of the system conserved? a. no velocity b. no internal forces C. no net external force d. no forces of any kind e. no net mass 3. An object of mass 200 g is initially at rest and is struck by another object of 100 g moving at 0.5 m/s. If the two objects stick together, what is their resulting speed? (Ignore friction.) a. O m/s b. 0.17 m/s c. 0.50 m/s d. 1.00 m/s e. 6.00 m/s 4. Calculate the kinetic energy before the collision in the question above. a. 12.5 J b. 25.0 J c. 50.0 J d. 0.0125 J e. 0.0375 J 5. When the objects stick together, the collision is described as a. totally elastic b. one dimensional c. two dimensional d. bonding e. totally inelastic ons for

Momentum Term: Name: 1. What is the classical definition of momentum? a. тu?/2 b. mgy с. ту/2 d. ks?/s е. ту 2. Under what circumstances is the momentum of the system conserved? a. no velocity b. no internal forces C. no net external force d. no forces of any kind e. no net mass 3. An object of mass 200 g is initially at rest and is struck by another object of 100 g moving at 0.5 m/s. If the two objects stick together, what is their resulting speed? (Ignore friction.) a. O m/s b. 0.17 m/s c. 0.50 m/s d. 1.00 m/s e. 6.00 m/s 4. Calculate the kinetic energy before the collision in the question above. a. 12.5 J b. 25.0 J c. 50.0 J d. 0.0125 J e. 0.0375 J 5. When the objects stick together, the collision is described as a. totally elastic b. one dimensional c. two dimensional d. bonding e. totally inelastic ons for

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter28: Special Relativity

Section: Chapter Questions

Problem 37PE: (a) Find the momentum of a 1.00109 kg asteroid heading towards the Earth at 30.0 km/s. (b) Find the...

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(a) Find the momentum of a 1.00109 kg asteroid heading towards the Earth at 30.0 km/s. (b) Find the ratio of this momentum to the classical momentum. (Hint: Use the approximation that =1+(1/2)v2/c2 at low velocities.)
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This is a two-dimensional version of a conservation-of-momentum problem. Now we will have to keep track of both the x and y components of the momentum of each object in the system. (Figure 1) shows two chunks of ice sliding on the surface of a frictionless frozen pond. Chunk A, with mass mA=5.0kg, moves with initial velocity vA,i=2.0m/s parallel to the x axis. It collides with chunk B, which has mass mB=3.0kg and is initially at rest. After the collision, the velocity of A is found to be vA,f=1.0m/s in a direction at an angle α=30∘ with the initial direction (Figure 2). What is the final velocity of B (magnitude and direction)? PART A. b)If chunk B has an initial velocity of magnitude 1.6 m/s in the +y direction instead of being initially at rest, find the final magnitude of its velocity. c)Using Part A, find the final direction of the velocity.
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