Question

- A boy runs with a uniform speed of 8 ms' on a roug
track against the frictional force of 25 N. Calculate the
power exerted by the boy.​

Answer 1

Answer:

Power = Force*Velocity=25*8=200Watt

Answer 2

Answer: 200W

Explanation:
v= 8m/s

F= 25N

Since P= W/t

Therefore,

P= F*s/t (s/t = v)

So,

P= F*v

= 25*8

= 200 J