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Question

A body having 5 kg mass is travelling with a certain velocity and has 10 kgm/s momentum. What is its kinetic energy?


A

50 J

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B

100 J

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C

10 J

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D

2 J

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Solution

The correct option is C

10 J


Momentum can be calculated as, P=m×v andK.E=12m×v2=(m2×v2)2×m=(momentum2)2×mass

= 10010=10 J


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