Question

Avinash can run at a speed of1 m/sec against the frictional force of 10N and Kapil can move at a speed of 3m/s against the frictional force of 25N. Who is more powerful and why?

Answer 1

Hey dear,

◆ Answer-
Kapil is more powerful than Avinash.

◆ Explanation-
Let force and velocity wrt Avinash be F1 & v1 and that wrt Kapil be F2 & v2.

# Given-
F1 = 10 N
v1 = 1 m/s
F2 = 25 N
v2 = 3 N

# Solution-
Power of Avinash -
P1 = F1.v1
P1 = 10 × 1
P1 = 10 Nm/s

Power of Kapil -
P2 = F2.v2
P2 = 25 × 3
P2 = 75 Nm/s

As P2 > P1, Kapil is more powerful than Avinash.

Hope this helps you...