Descriptions Motion Graphs Acceleration

What is the unit of speed?

• Metres

• m/s

• kgm/s

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What is the unit of acceleration?

• m

• m/s

• kgm/s

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What quantity is the rate of change of velocity?

• Displacement

• Acceleration

• Final velocity

• Initial velocity

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A car changes its velocity from 4m/s to 12m/s over a time of 8s. What is the acceleration of the car?

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Acceleration of an object happens when things_______

• Slow down

• Go faster

• Change direction

• All of the above

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Acceleration = (change in ______)/Time taken

• Displacement

• Velocity

• Speed

• Distance

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A toy plane moves at a constant speed at 4m/s. It will travel a distance of 56m in ____

• 14s

• 224s

• 140s

• None of the above

A bus covers a distance of 80km in 2hours. It’s average speed in meter per second is________

• 40m/s

• 11.1m/s

• 160m/s

• 44.4m/s

What does the graph represent?

• Accelerating

• Slowing down

• Moving constantly

• You dont know……

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How is displacement found from a velocity-time graph

• Read from y-axis

• Gradient

• Area under the graph

• From x-axis