Equations of uniformly accelerated motion
2 marks · EasyDescribe what is meant by ‘initial speed’ and ‘final speed’ in the equation .
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Initial speed (u) is the speed at the start of motion; final speed (v) is the speed at the end of the distance considered.
Must show: Defines initial and final speed
Also accept: 'u' is the speed at the start, 'v' is the speed at the end
Common mistakes: Confusing initial/final speed with acceleration or distance
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Marking points
B1 · 1 mark · Correctly describes initial speed as starting speed (u)
B2 · 1 mark · Correctly describes final speed as ending speed (v)
Worked solution
In the equation, 'u' (initial speed) is the speed at the start of the motion or distance considered, and 'v' (final speed) is the speed at the end.