Due to some frictional forces ,velocity of a body reduces from 10 to 6 meter per second what will be %age loss in kinetic energy
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Answer:
V1 = 10 m/s
KE1 = mv²/2
= m*10²/2
= m*100/2
=m*50 J
V2 = 6 m/s
KE2 = mv²/
= m*6²/2
= m*36/2
= m*18 J
Loss of energy = KE1 - KE2
= 50 - 18
= 32 J
Loss percentage = 32*100%/50 = 32*2% = 64%
The energy is decreased by 64%.
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