Motion

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• Created by: allieal
• Created on: 22-12-13 09:47
What is speed?
distance travelled by an object each second
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What does the gradient of a distance-time graph represent?
Speed, greater the gradient, greater the speed
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When is the line on a distance-time graph horizontal?
When the object is stationary
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On a distance-time graph, what does an object travelling at constant speed look like?
A straight line sloping upwards
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How is speed calculated?
Speed (m/s) = Distance travelled (m) / Time Taken (s)
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What is velocity?
Speed with direction
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What is acceleration?
change in velocity per second
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How do you calculate acceleration?
acceleration (m/s squared) = final velocity (m/s) - initial velocity (m/s) / time (s)
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What is a negative acceleration?
deceleration
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What does the gradient of a line on a velocity-time graph represent?
Acceleration; steeper the gradient, greater the acceleration
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What is happening when the line is horizontal on a velocity-time graph?
Acceleration is zero, the object is travelling at a steady speed
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How is deceleration shown on a velocity-time graph shown?
The line has a negative gradient
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How do you work out distance travelled on a velocity-time graph?
the area under the line; the bigger the area, the greater the distance travelled
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Other cards in this set

Card 2

Front

What does the gradient of a distance-time graph represent?

Back

Speed, greater the gradient, greater the speed

Card 3

Front

When is the line on a distance-time graph horizontal?

Card 4

Front

On a distance-time graph, what does an object travelling at constant speed look like?

Card 5

Front

How is speed calculated?