(Answered) Please show a step-by-step explanation i know the answer

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Please show a step-by-step explanation. (I know the answer but I don't know how to work through the problem to get the answer.)

A 50-N force is the only force a 2-kg crate that starts from rest. At the instant the object has gone 2m the rate at which the force is doing work is: (answer is in Watts)

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