CAIE IGCSE Physics 1.5.1.8 Friction Drag Acts on an Object Questions

Practise relating resultant force, mass and acceleration with F = ma, and interpreting engine force, aerodynamic drag and braking situations with correct units.

Exam points

Relate resultant force, mass and acceleration using F = ma in engine, drag and braking situations.

[Maximum number: 1]

A train has a total mass of 520000 kg . The train accelerates at $1.1 \mathrm{~m} / \mathrm{s}^{2}$ .

The train uses electric motors.

Explain why the force on the train due to the motors is greater than the value calculated in (ii).

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CAIE IGCSE Physics 1.5.1.8 Friction Drag Acts on an Object Questions question 1