Avinash can run with a speed of 8 , m , s^{-1 | vedclass

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Question

(A) Power is defined as the rate of doing work,calculated as $P = F 	imes v$,where $F$ is the force and $v$ is the velocity.For Avinash:$P_{A} = F_{A

Vedclass · Accepted Answer

Avinash,because his power is $80 \, W$.

Vedclass · Answer

(A) Power is defined as the rate of doing work,calculated as $P = F 	imes v$,where $F$ is the force and $v$ is the velocity.For Avinash:$P_{A} = F_{A} 	imes v_{A} = 10 \, N 	imes 8 \, m \, s^{-1} = 80 \, W$.For Kapil:$P_{K} = F_{K} 	imes v_{K} = 25 \, N 	imes 3 \, m \, s^{-1} = 75 \, W$.Comparing the two,$80 \, W > 75 \, W$. Therefore,Avinash is more powerful than Kapil.

Avinash can run with a speed of $8 \, m \, s^{-1}$ against a frictional force of $10 \, N$,and Kapil can move with a speed of $3 \, m \, s^{-1}$ against a frictional force of $25 \, N$. Who is more powerful and why?

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