Distinguish between elastic and inelastic collisions.
Work, Energy and Power
Original Khojo Papers practice question — not from a past board paper.
100 J
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Work = Fs cos θ = 50 × 4 × cos 60° = 50 × 4 × 0.5 = 100 J.
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 pump lifts 600 kg of water through 10 m in 30 s. Find its power. Take g = 10 m s−2.
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