A-LevelPhysicsDynamics9702/12 · Oct/Nov 2019 · Q11 Mark
A cyclist has a speed of 5 m s⁻¹ and a small car has a speed of 12 m s⁻¹. Which statement does not give a reasonable estimate?
AThe kinetic energy of the cyclist is 1 × 10³ J.
BThe kinetic energy of the car is 7 × 10⁵ J.
CThe momentum of the cyclist is 4 × 10² kg m s⁻¹.
DThe momentum of the car is 2 × 10⁵ kg m s⁻¹.
✓ Correct answer
D: The momentum of the car is 2 × 10⁵ kg m s⁻¹.
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