Answer available
Class 11 · Physics · 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.
3 marksMediumNumerical
Class 11 · ICSE · Physics
Work, Energy and Power
Work done by a constant and a variable force, the work-energy theorem, conservative forces, power and collisions.
- Questions
- 7
- PYQs
- 0
- Topics
- 0
Syllabus mapping: ISC syllabus (CISCE)
Questions
7 questions in this chapter.
- Answer available
Class 11 · Physics · 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.
3 marksMediumNumerical
- Answer available
Class 11 · Physics · 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.
3 marksMediumNumerical
- Answer available
Class 11 · Physics · 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.
3 marksMediumNumerical
- Answer available
Class 11 · Physics · Work, Energy and Power
Distinguish between elastic and inelastic collisions.
3 marksMediumShort answer
- Answer available
Class 11 · Physics · Work, Energy and Power
State the work-energy theorem.
3 marksMediumShort answer
- Answer available
Class 11 · Physics · Work, Energy and Power
What is a conservative force? Give two examples and state one property.
3 marksMediumShort answer