question_answer

  Avinash can run with a speed of 8 against the frictional force of 10 N and Kapil can move with a speed of 3  against the frictional force of 25 N. Who is more powerful and why? 

Answer:

    Force applied by Avinash = 10 N Speed of Avinash = 8            Power of Avinash = Fu =10 x 8 =80 W         Force applied by Kapil = 25 N Speed of Kapil Power of Kapil = Fv = 25 x 3 = 75 W        Since, Avinash has more power (80 - 75) = 5 W than Kapil. So, Avinash is more powerful.