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Question
Find the momentum of a body of mass 100 g having a kinetic energy of 20 J.
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Solution
We have,
Kinetic energy of the moving body, (K.E) = 20 J
Mass of the moving body, (m) = 0.1 kg
We have a relation between momentum and kinetic energy as, `P = sqrt(2(K.E)(m))`
So ,
`(P) = sqrt(2(20)(0.1))`
= 2 kg.m/s
So , the momentum of the moving body is 2 kg.m/s .
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