Distinguish between elastic and inelastic collisions.
Work, Energy and Power
Original Khojo Papers practice question — not from a past board paper.
2,000 W
No citable source has been recorded for this record. Treat it as practice material, not as fact.
The work done is mgh = 600 × 10 × 10 = 60,000 J, so the power is 60,000 ÷ 30 = 2,000 W.
From the same topic and chapter, at a similar level.
Distinguish between elastic and inelastic collisions.
Work, Energy and Power
What is a conservative force? Give two examples and state one property.
Work, Energy and Power
A force of 50 N acts on a body and moves it 4 m at 60° to the direction of the force. Find the work done.
Work, Energy and Power
State the work-energy theorem.
Work, Energy and Power
A body of mass 2 kg falls freely from rest through 20 m. Find its kinetic energy on reaching the ground and its momentum. Take g = 10 m s−2.
Work, Energy and Power
A body of mass 4 kg moving at 6 m s−1 collides head-on with a stationary body of mass 2 kg and they move off together. Find their common velocity.
Work, Energy and Power