A skydiver who weighs 60 kg is falling down at a certain speed. He covers 40 m in 2 seconds. The rate of doing work by the skydiver is [Take g=10 m/s2]
Rate of doing work is the power of the skydiver = work donetime
Work done = Force x Displacement
Force = m×g=(60×10)N
Dispalcement= 40 m (Given)
Now, work done=(60×10×40) J
So, rate of doing work by the skydiver =60×10×402 W
Therefore, power of the skydiver is equal to 12 kW.