2023 · O/N · 5054/21 | Q2

0/42parts marked · 0 of 80 marks

Question (2 of 9)8 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.

(a)

A lorry at rest on a straight, horizontal road accelerates forwards under a constant driving force of 5.4 × 10⁴ N.

Define acceleration.

[2 marks]

(b)(i)

State the equation defining work done, referring to the direction of the force.

Answer guidance

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

[1 mark]

(b)(ii)

Calculate work done by the driving force over 280 m, in joules.

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]

(b)(iii)

At one point, the lorry has kinetic energy 3.2 × 10⁶ J and speed 12 m/s. Calculate its mass in kg.

Answer guidance

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

[3 marks]

5054/21/O/N/23Cambridge O Level Physics 5054 · Oct/Nov 2023 · Paper 2 variant 1 · Question 2