Work-Energy TheoremMediumQuestion 6020
Question
Car (1000 kg) accelerates from 0 to 20 m/s. Work done by engine (frictionless):
- A200,000 JCorrect
- B100,000 J
- C400,000 J
- D20,000 J
Correct answer
200,000 J
Explanation
W = ΔKE = ½×1000×400 = 200,000 J.