Question

If you exert a force of 700 N to walk 6 m up a flight of stairs in 6 s, how much power do you use?

Answer 1

Power =work/time
Work=f*d
700N*6m=4,200
4,200/6s=700j

Answer 2

answer should be in Joules per second, since those are the units for power, energy (or work) over time.

Answer 3

Unit of power is also watt

Answer 4

yes, Watt=Joules/seconds

Answer 5

power = force * velocity
velocity=d/t ie 6/6=1
power=700*1 = 700 Watt

Answer 6

as power of moving objects is force into velocity

Answer 7

just a note:
@Ann-Hybrid even when you get the same value with your approach, it may not be totally correct, since you are assuming the movement happens at constant velocity and that is not stated in the problem description.