Question

Avinash 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?

Answer 1

Power of Avinash P_A = F_A . v_A = 10 × 8 = 80 W 

The power of Kapil P_k = F_k . v_k = 25 × 3 = 75 W 

So, Avinash is more powerful than Kapil.