A-LevelPhysicsWork, energy and power9702/12 · Oct/Nov 2021 · Q201 Mark

The total weight of a motorbike and rider is 1800 N. The motorbike travels in a straight line at constant speed up a hill at an angle of 30° to the horizontal. [Figure 20.1] The useful output power of the motorbike is 36000 W. The total resistive force due to air resistance and friction on the motorbike and rider is 2400 N. What is the speed of the motorbike?

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A8.6 m s⁻¹

B11 m s⁻¹

C15 m s⁻¹

D24 m s⁻¹

✓ Correct answer

B: 11 m s⁻¹

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Topic: Work, energy and power, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2021 Paper 1 Variant 2, question 20.

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