# Find momentum of a body of mass 100g having kinectic energy 500J

2
by MEGgopakanisuravis

2016-03-04T11:44:45+05:30

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Monmentum, p = m x v
so v= p/m
K.E. = 1/2 mv²
=1/2 m (p/m)²
=1/2 m x p²/m x m
=p²/2m
so, according to the question,
K.E. = 500J
⇒500 = p² / 2 x 100
⇒p² = 500 x .2
⇒p = √100.0 = 10
so momentum is 10 kg.m/s
hope it's helpful, if yes plsss mark as the brainliest
• Brainly User
2016-03-04T11:49:56+05:30

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Given-
Mass=100g
=0.1
Kinetic energy=500 j
we know,
1/2×0.1×v²=500
or, 0.1×v²=500×2
or,1/10×v²=1000
or,v²=10000
or,v=√10000
or,v=100
we know that momentum of a body is=m×v
=0.1×100
=1/10×100
=10 kgm/s
Hope it helps...............

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