Asked by sally
Power applied to a particle varies with time as P=(3t^2-2t+1)W. Find the change in kinetic energy between t=1s and 4s.
Answers
Answered by
Damon
work = change in energy = integral of P dt
= t^3 - t^2 + t at 4 - at 1
= t^3 - t^2 + t at 4 - at 1
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