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

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) (v/2)

Tardigrade Admin · Accepted Answer

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.

Q. 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

v

2v

zero

$\frac{v}{2}$

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.

Q. 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

v

2v

zero

2v​

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.

Q. 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

$\frac{v}{2}$