Your thinking is off?
What is the 160? ARe you looking for average force? It is hardly an average. Is the car undergoing constant velocity? What was the final velocity of the car ( IE, did it have KE at the end)
Raul pushes a stalled car with a force of 204 N. If the required force decreases at a constant rate from 204 N to 44.0 N for a distance of 16.3 m in 16.0 s, calculate the average power required to move the car.
204-44=160
160*16.3/16
2608/16
answer: 163 W
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