Physics (AS & A Level) · Oct / Nov 2019 · Paper 12 · Question 1
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 × 10⁴ 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.
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Correct answer: D. The momentum of the car is 2 × 10⁵ kg m s⁻¹.
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