What is the difference between speed and velocity?

Speed is a scalar quantity as it only has a magnitude.


Velocity is a vector quantity as it has both a magnitude and a direction.


Both measure how fast you're going, but only velocity tells you the direction you're going in.

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What is the difference between distance and displacement?

Distance is a scalar quantity as it only has a magnitude.


Displacement is a vector quantity as it has both a magnitude and a direction.


Displacement is the shortest distance between the start and end points. 

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What is the formula for velocity?

velocity (v) = displacement (s) / time (t)


v = s / t

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What is the speed of sound in air?

330 m/s

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What is the approximate speed of walking?

1.5 m/s

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What is the approximate speed of running?

3 m/s

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What is the approximate speed of cycling?

6 m/s

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What is the approximate speed of a car?

25 m/s

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What is the approximate speed of a train?

55 m/s

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What is the approximate speed of an aeroplane?

250 m/s

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