Answer:
300J
The total work done or energy transferred is equal to the product of the force and the displacement in the direction of the force applied.
In this case it would be
300N x 10m to get 3000J.
This energy is transferred in 10 seconds and since power is energy transferred per unit time.
3000J ÷ 10 = 300 Watts or 300 Joules per second.
so your answer is 300 W