A-LevelPhysicsDynamics9702/12 · Oct/Nov 2018 · Q11 Mark
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 / J: 3 x 10⁵, momentum / kg m s⁻¹: 3 × 10⁴
Bkinetic energy / J: 3 x 10⁵, momentum / kg m s⁻¹: 5 x 10⁶
Ckinetic energy / J: 2 x 10⁷, momentum / kg m s⁻¹: 3 × 10⁴
Dkinetic energy / J: 2 x 10⁷, momentum / kg m s⁻¹: 5 x 10⁶
✓ Correct answer
A: kinetic energy / J: 3 x 10⁵, momentum / kg m s⁻¹: 3 × 10⁴
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