If your friend runs with a force of 150N for 50m race in 9 seconds. How much power did they exert?

the power exerted by the friend is 833.4 W

Explanation:

Given;

applied force, F = 150 N

distance traveled by the friend, d = 50 m

time of motion, t = 9 s

The speed of the friend during the motion is calculated as;

v = d/t

v = 50/9

v = 5.556 m/s

The power exerted by the friend is calculated as;

P = Fv

P = 150 N x 5.556 m/s

P = 833.4 W

Therefore, the power exerted by the friend is 833.4 W

power out to power in less than 100%

this is poiselle's equation from fluid mechanic in physics. mech eng