Physics (AS & A Level) · Oct / Nov 2018 · Paper 12 · Question 1
A car is travelling at a speed of 20 m s⁻¹. The table contains values for the kinetic energy and the momentum of the car. Which values are reasonable estimates?
- Akinetic energy 3 × 10⁵ J, momentum 3 × 10⁴ kg m s⁻¹
- Bkinetic energy 3 × 10⁵ J, momentum 5 × 10⁶ kg m s⁻¹
- Ckinetic energy 2 × 10⁷ J, momentum 3 × 10⁴ kg m s⁻¹
- Dkinetic energy 2 × 10⁷ J, momentum 5 × 10⁶ kg m s⁻¹
As printed in the paper
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Correct answer: A. kinetic energy 3 × 10⁵ J, momentum 3 × 10⁴ kg m s⁻¹
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