2023 · M/J · 5054/21 | Q2

0/48parts marked · 0 of 80 marks

Question (2 of 11)7 marks · Practise this topic →

Options

Theory: answer each printed part. For drawings, upload a clear photo of your sketch on the supplied figure; show working and units for calculations.

In a safety test, a car of mass 1100 kg travels at a speed of 10 m/s and collides with a stationary van of mass 3000 kg.

After the collision the car and the van move together with a velocity v.

Fig. 2.1 shows the car and van before and after the collision.

The total momentum of the car and van is conserved during the collision.

(a)(i)Define ‘momentum’.

[1 mark]

(a)(ii)State the unit of momentum.

Answer guidance

State A short answer. No explanation is needed, and adding one cannot earn extra marks.

[1 mark]

(b)Calculate the velocity v of the car and van after the collision. Give your answer in m/s.

Answer guidance

Calculate Show your working. The method can earn marks even when the final value is wrong, and a bare answer often cannot.

[2 marks]

(c)(i)Calculate the total kinetic energy of the car and van after the collision. Give your answer in J.

Answer guidance

Calculate Show your working. The method can earn marks even when the final value is wrong, and a bare answer often cannot.

[2 marks]

(c)(ii)State the transfer of energy that occurs in the collision.

Answer guidance

State A short answer. No explanation is needed, and adding one cannot earn extra marks.

[1 mark]

5054/21/M/J/23Cambridge O Level Physics 5054 · May/June 2023 · Paper 2 variant 1 · Question 2