The difference between speed and velocity
3 marks · NormalA cyclist increases her speed from to in seconds. Calculate her acceleration.
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2.0 m/s^2 (±0.1)
Also accept: 2; 2.00
Common mistakes: Using final velocity instead of (v-u)
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Marking points
M1 · 1 mark · Uses correctly with substituted values.
A1 · 1 mark · Correctly calculates the numerator ().
A2 · 1 mark · Arrives at final answer 2.0 with correct unit.
Worked solution
Initial velocity , final velocity , time .