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>>Class 11
>>Physics
>>Laws of Motion
>>Newton's Second Law of Motion
>> $A ball of mass 'm' moves normal to a wal$

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

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Updated on : 2022-09-05

Solution

Verified by Toppr

Correct option is B)

If the collision of the ball and the wall is elastic one then the change in the momentum of the ball after collision is $= m u - (- m u) = 2 m u$ away from the wall.

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