Question

In a head an elastic collision of a very heavy body moving at $v$ with a light body at rest, velocity of the heavy body after collision is

• A. v
• B. 2v
• C. zero
• D. $\frac{v}{2}$

Answer 1

Answer: (A)

v

Answer 2

In a perfectly elastic collision, the relative velocity remains unchanged in magnitude but reversed in direction. Therefore, the velocity of heavy body after collision is v.