Physics · Work, Energy and Power
The work-energy theorem for a variable force is mathematically expressed as (where W is work done, Kf is final kinetic energy, and Ki is initial kinetic energy):
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1W = Kf - Ki✓
- 2W = 2Kf - Ki
- 3W = 2Kf + Ki
- 4W = Kf + Ki
Correct answer
W = Kf - Ki
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