# Sunita can run with a speed of 8 m s–1 against the frictional force of 10 N, and Kapil can move with a speed of 3 m s–1 against the frictional force of 25 N. Who is more powerful and why?

Power of Sunita = v.k

Where v = velocity and k = frictional constant

Power of Sunita = 10 N× 8 m/s= 80 W

Power of Kapil = 25 N× 3m/s = 75 W

So, Sunita is more powerful than Kapil.

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