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(18) A body of mass 5 kg is moving with a
momentum of 10 kg ms. A force of 0.2 N acts
on it in the direction of motion of the body for
10 seconds. The increase in its kinetic energy is:
(a) 2.8 J
(b) 3.2 J
(C) 3.8)
(d) 4.4 J
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Answered by
2
Answer:
Answer is d) 4.4 J
Answered by
0
Answer:
initial kinetic energy is P^2/2m= 100/10=10J
v=u +at=2+0.4=2.4
ke=2.4×2.4×5×0.5=14.4J
change is 4.4J
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