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Question

If the kinetic energy of a body is increased by 100%, then the change in momentum of the body is :

A
4.14 %
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B
41.4 %
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C
141.4 %
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D
None of these
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Solution

The correct option is B 41.4 %
We know that,

KE=p22m

pKE

So,

p2p1=KE2KE1

p2p=2KK=1.414

p2pp=0.414

p2pp%=41.4%

Hence, option (B) is the correct answer.

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