3.1 Distance and speed
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5 Terms
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How do you find average speed?
Average speed = distance travelled/time taken
v = change in x/ change in t
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What’s the unit for speed?
ms^-1
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How is constant speed represented in a distance time graph?
By a straight sloping line. The gradient of that line is the speed as its change in distance divided by change in time.
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What is instantaneous speed?
The speed of an object at one specific moment in time.
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How is instantaneous speed found on a distance time graph?
By drawing a tangent at the specific time then determining the gradient. The greater the gradient, the greater the instantaneous speed.
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