Velocity-time graphs
1 mark · EasyWhich feature of a velocity–time graph shows that an object is accelerating?
- A.A rising straight line
- B.A horizontal line
- C.A falling straight line
- D.A curved line at the zero-velocity axis
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Correct option: A rising straight line
Also accept: A falling straight line (for negative acceleration, but the question says 'accelerating')
Common mistakes: Choosing horizontal line (constant velocity)
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Marking points
B1 · 1 mark · Selects 'A rising straight line' as the correct feature
Worked solution
A rising straight line shows increasing velocity so the object is accelerating.