Question

In figure, determine the character of the collision. The masses of the blocks, and the velocities before and after are given. The collision is

A. perfectly elastic
B. Partially inelastic
C. Completely inelastic
D. This collision is not possible

Answer 1

Correct Answer - A
Ans.(1)
Linear momentum is conserverd and
`e=("Speed of separation")/("Speed of approach")=(1.4+0.6)/(1.8+0.2)=1`
So, collision of perfectly elastic.