Q.

The kinetic energy of a body is increased by 300%. The momentum of the body would increase by:

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a

50%

b

100%

c

150%

d

300%

answer is B.

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Detailed Solution

KE = P22m       or P2 ∝ KE   ----(i)KE2= KE1+ (300100)KE1 = 4KE1From (i) P2P1 = KE2KE1 = 4KE11KE1 = 2It means momentum becomes twice, hence increase in momentum is 100%
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