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प्रश्न
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?
उत्तर
Since, Power = Force × Velocity
∴ Power of Avinash, PA = 10 N x 8 m s−1= 80 W
Power of Kapil, PK = 25 N x 3 m s−1 = 75 W
As PA > PK so, Avinash is more powerful than Kapil.
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