Question

If it takes 20 N to move a box how much power will be needed to move the box a distance of 5 m in five seconds

Answer 1

Power is work done per time and work done is force times distance. The power is found by multiplying the force (20N) and the distance (5m) and dividing the product by the time (5s)

(20*5)/5=20Nm/s. 

therefore it needs 20.