A-LevelPhysicsDynamics9702/22 · May/June 2017 · Q44 Marks
State Newton's first law of motion.
- (a)State Newton's first law of motion.[1]
- (b)(i)Calculate the magnitude of the velocity of B after the collision.[2]
- (b)(ii)The collision between A and B is inelastic. Explain how the collision is inelastic and still obeys the law of conservation of energy.[1]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (May/June 2017). The mark or mark type is shown in brackets.
- [B1] a body/mass/object continues (at rest or) at constant/uniform velocity unless acted on by a resultant force
- [C1] initial momentum = final momentum
- [A1] v = (-) 0.3(0) m s⁻¹
- [B1] kinetic energy is not conserved/is lost (but) total energy is conserved/constant
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