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CAIE IGCSE Physics 1.5.1.11 Recall/use: F = ma

Practise applying F = ma to vehicles, balls and moving objects, combining acceleration calculations with resultant-force reasoning.

Syllabus
2026–2028
Course
Physics 0625

Exam points

  • calculate resultant force from mass and acceleration, with N from kg and m s^-2
  • find acceleration first from a velocity change and time, then apply F = ma
  • explain changes in acceleration using driving force, drag and resultant force

1.5.1.11—Recall/use: F = ma question 1

[Maximum number: 2]

Fig. 2.1 shows a motorcyclist accelerating along a straight horizontal section of track.

Fig. 2.1

Fig. 2.1

The motorcyclist and motorcycle have a combined mass of 240 kg .

On the straight horizontal section of the track, the motorcyclist accelerates from rest at 7.2 m/s27.2 \mathrm{~m} / \mathrm{s}^{2}.

Calculate the resultant force on the motorcyclist and motorcycle on the straight section of track.
resultant force =

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