FORCE, MASS AND ACCELERATION
2 marks · EasyA delivery robot of mass 10 kg receives an unbalanced force of 40 N forwards as it starts to move. Calculate the acceleration of the robot. Give your answer in m/s².
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4.0 m/s^2 (±0.05)
Also accept: 4
Common mistakes: Dividing force by acceleration instead of mass; Multiplying force and mass
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Marking points
M1 · 1 mark · Substitutes correct values into F = m × a or a = F/m.
A1 · 1 mark · Correct answer: 4.0 m/s² (accept 4).
Worked solution
The relationship is F = m × a, so rearrange for acceleration:
Substitute the values: