A body is moved through a distance of 500m by a force of 20N. If the power developed is 0.40Kw. Calculate the time for which the force acts?

1 Answer
CrispyRounds
Aug 5, 2018

#t=25s#

Explanation:

First solve for work done with the formula #W=Fd#

#W=20N*500m=10000J#

Use power formula to solve for time, using #P=W/t#

#400W=10000J/t#

converted to watts instead of Kw since Joules per second is equal to watts

#t=25s#

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