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Class 9 Science Chapter 11 Work And Energy Quiz 5 (16 MCQs)

Quiz Instructions

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1. In which scenario is work = 0 J?
2. Power depends on force and speed.
3. When a body falls freely towards the earth, then its total energy
4. 45J of work were done on the object that moved 5M. How much force was applied to the object?
5. The sum of GPE and KE in a system is also called what?
6. A car with mass 'M' is moving on horizontal road with velocity 'v'. Driver applies accelerator and increases it speed 3 times to '3v'. The final K.E. acquired by the car will be:
7. Which energy transformation is observed in electric cell
8. What does the Law of Conservation of Energy state?
9. Work is measured in units called
10. Which one of the following is not the unit of energy?
11. One atomic mass unit (a.m.u) is equal to:
12. If you push a cart with a force of 60 N for 2 m ..... how much work have you done
13. The potential energy of a ball of weight 7N at 10m of height at rest is:(g = $10ms^{-2}$
14. If my 500 kg car is rolling down the hill at 10 m/s, how much Kinetic Energy must I overcome in order to stop it?
15. An 85.0-kg person climbs stairs, gaining 4.50 meters in height. Find the work done to accomplish this task.
16. What has the greatest impact on Kinetic Energy?
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