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NCAT - Practice Test - Physics - Work and Energy Quiz

Attempt 10 MCQs on NCAT - Practice Test - Physics - Work and Energy | Quiz 2

11. What does the work-energy theorem state?



12. Work done against friction is dissipated as:



13. What is the formula for efficiency?



14. Calculate KE of a 2 kg mass moving at 3 m/s.



15. A 5 kg mass is lifted to 10 m. Find its gravitational PE (g=10 m/s²).



16. What is the sign of work when force and displacement are in the same direction?



17. What is the sign of work done by friction?



18. How many joules are in 1 kilowatt-hour?



19. What happens to total mechanical energy during free fall (no air resistance)?



20. What is a property of a conservative force?



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