Question

A ball of mass 0.480 kg moving east (+x direction) with a speed of 3.70 m/s collides head-on with a 0.240 kg ball at rest. Assume that the collision is perfectly elastic.

A. What is be the speed of the 0.480-kg ball after the collision? (Express your answer to three significant figures and include the appropriate units)

B. What is be the direction of the velocity of the 0.480-kg ball after the collision? to the east or to the west ?

C. What is the speed of the 0.240-kg ball after the collision? (Express your answer to three significant figures and include the appropriate units.)

D. What is the direction of the velocity of 0.240-kg ball after the collision? To the east or to the west?

Answer 1

Let initial speeds of 0.48 Kg Ball and 0.24 Kg balls be $v_{1}$ and $v_{2}$ respectively.
Also, final speeds of 0.48 Kg Ball and 0.24 Kg balls be$v_{1}'$ and $v_{2}'$ respectively.