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ScienceCLASS 9CBSE

answered 27 Mar 2026

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?

A.VERIFIED ANSWERfact-checked by tutors

Soln:

P₌f×v

P₁₌ 10× 8 = 80W P2=25×3=75W

Hence Avinash is more powerful than Kapil

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