The difference between speed and velocity
2 marks · EasyA train increases its speed from 12 m/s to 24 m/s in 4 seconds. Calculate the acceleration of the train.
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3 m/s^2 (±0.1)
Also accept: 3.0 m/s^2
Common mistakes: Omitting units; Incorrect substitution
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Marking points
M1 · 1 mark · Substitute correct values into
A1 · 1 mark · Final answer 3 m/s² with correct unit
Worked solution
Initial velocity,
Final velocity,
Time taken,