Physics 0625 · IGCSE · Pressure

Pressure — practice question

Fig. 5.1 compares a tractor and a car with the same weight. Both vehicles travel across the same soft ground.

(a)[3]

Explain why the car sinks into the soft ground, whereas the tractor does not.

(b)[3]

Explain why the pressure of the air in the tyre increases. Use ideas about air molecules.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “For this calculation, use $P = F \div A$.” …