A billiard ball of mass M , moving with velocity `v_1` collides with another ball of the same mass but at rest . If the collision is elastic , the angle of divergence after the collision is

Options

A. `0^@`
B. `30^@`
C. `90^@`
D. `45^@`

Answer

C

Explanation

Answer(3) A ball of mass 'M' moving with velocity `'v_1'` undergoes a oblique collision with the another ball of same mass (at rest) when it collides. After collision, the angle of divergence is `90^@.`