instantaneous speed
What instantaneous speed means in Physics GCSE, as defined for AQA.
Definitions of instantaneous speed
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Reference: AQA
The speed at one instant, found from the gradient of the tangent to the distance–time graph at that time.
The speed at one moment, and that is what a speedometer shows.
Topics that use instantaneous speed
- Speed (AQA GCSE)
- The distance–time relationship (AQA GCSE)
Related terms
- average speed
- constant speed
- axes and scales
- comparing lines
- describing motion
- distance equation
- distance travelled
- halving the path
Using instantaneous speed in the exam
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