Physics 0625 · IGCSE · Motion

Motion — practice question

The Moon has no atmosphere. A space probe is fired from the Moon’s surface. Fig. 1.1 shows the speed-time graph for the space probe.
(a)[3]

Determine the acceleration of the space probe at time = 0.

(b(i))[1]

State how the graph indicates this, without doing any calculation.

(b(ii))[1]

State one possible reason for the change in acceleration shown in Fig. 1.1.

(c)[3]

Calculate the distance covered by the space probe from time = 200 s to time = 300 s.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Use a tangent to the graph OR gradient OR a = Δv \div Δt or (v - u) \div t” …

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