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2)The momentum of a body of mass 5 kg is 10 kgm/s , then its velocity will be |
Answer» Answer:4.4 Joule Explanation:Change in momentum, Δp=F.t=0.2×10=2 Initial value of velocity = 5 10
=2m/sec Initial ENERGY = 2 1
×5×2×2=10J Total FINAL momentum =10+2=12kgm/sec Final velocity = 5 12
m/sec Final energy = 2 1
×5× 5 12
× 5 12
= 5 72
=14.4J Change in energy =14.4−10=4.4joule |
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