In a head on elastic collision of a very heavy body moving at V with a light body at rest, velocity of heavy body after collision is

Question

In a head on elastic collision of a very heavy body moving at V with a light body at rest, velocity of heavy body after collision is (A)  V  (B)  2 V  (C) zero (D)  (V/2)

Tardigrade Admin · Accepted Answer

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

Q. In a head on elastic collision of a very heavy body moving at $V$ with a light body at rest, velocity of heavy body after collision is

$V$

$2 V$

zero

$\frac{V}{2}$

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

Q. In a head on elastic collision of a very heavy body moving at V with a light body at rest, velocity of heavy body after collision is

V

2V