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Questions  

If the momentum of a certain body be increased by 50% , its KE will increase by

a
25%
b
50%
c
100%
d
125%

detailed solution

Correct option is D

We know that K = p2 or K2K1= p22p21K2-K1K1×100 = [p22-p12p12]×100                        = [(150)2-(100)2(100)2]×100 = 125%

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