MHT CET202415 May 2024Morning ShiftPhysicsWork, Power and EnergyActual
A body of mass 1 kg starts from rest and moves with uniform acceleration. In 2 seconds, its velocity is 10 ~m / s . The power exerted on the body in one second is
Options
- A20 W
- B25 W
- C50 W
- D100 W
Correct answer
B. 25 W
Step-by-step solution
aligned & P= W t & W= change in K E & W= 1 2 ~m ( v ^2- u ^2 )= 1 2 1 10^2=50 ~J & P= 50 2 =25 ~W aligned