Question

# A ball of mass 'm' moves normal to a wall with a velocity 'u' and rebounds with the same speed. The change in momentum of the ball during the rebounding is

A
2mu towards the wall
B
2mu away from the wall
C
zero
D
mu away from the wall
Solution
Verified by Toppr

#### If the collision of the ball and the wall is elastic one then the change in the momentum of the ball after collision is =mu−(−mu)=2mu away from the wall.

0
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