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The kinetic energy of a body is 'K'. If one-fourth of its mass is removed and velocity is doubled, its new kinetic energy is,

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By Expert Faculty of Sri Chaitanya
a
K
b
3 K
c
4 K
d
9K/4

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detailed solution

Correct option is B

K=12mv2

K'=1234m2v2=3K

 

 


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