A-LevelPhysicsWork, energy and powerMay/June 2010Paper 1 Q151 Mark
A constant force F, acting on a car of mass m, moves the car up the slope through a distance s at constant velocity v. The angle of the slope to the horizontal is α. [Figure 15.1] Which expression gives the efficiency of the process?
Amgs sinα / Fv
Bmv / Fs
Cmv² / 2Fs
Dmgs sinα / F
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The correct answer is D. This question tests the candidate's understanding of work, energy and power within the Physicssyllabus. The examiner's mark scheme requires...
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