Two objects of the same mass move along the same line in opposite directions. The first mass moves with velocity vA. Objects collide, stick together, and move with a velocity of 0.100vA in the direction of the velocity carried by the first mass before the collision. What was the velocity of the second mass before the collision?

0.90

10.0

1.20

0.00

0.80

Assume that two cars of equal mass collide on a frictionless rail.If the velocity of the first mass before the collision is +1meter/sec and the velocity of the second mass is
-1 meter/sec, what are the final velocities of each mass for thecase of a completely elastic collision and the case of a completelyinelastic collision?

A 4.3 kg ball with a velocity of 5.0 m/s in the +x-directioncollides head-on elastically with a stationary 2.1 kg ball. What isthe speed of the first ball after the collision?
What is the direction of the velocity of the first ball after thecollision?
What is the speed of the second ball after the collision?
What is the direction of the velocity of the second ball after thecollision?

A block of mass m_1 = 1.30 kg moving at v_1 = 1.20 m/s undergoes acompletely inelastic collision with a stationary block of mass m_2= 0.700 kg. The blocks then move, stuck together, at speed v_2.After a short time, the two-block system collides inelasticallywith a third block, of mass m_3 = 2.60 kg, which is initially atrest. The three blocks then move, stuck together, with speed v_3.Assume that the blocks slide without friction.


ind \frac{v_2}{v_1}, the ratio of the velocity v_2 of the two-blocksystem after the first collision to the velocity v_1 of the blockof mass m_1 before the collision.
\frac{v_2}{v_1} =


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Part B
Find \frac{v_3}{v_1}, the ratio of the velocity v_3 of thethree-block system after the second collision to the velocity v_1of the block of mass m_1 before the collisions.
\frac{v_3}{v_1} =


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