- A scalar quantity has a magnitude but no direction.

- Examples of scalar quantities include distance, speed, time, power and energy.

- A vector quantity has a magnitude and a direction.

- Examples of vector quantities include displacement, velocity, acceleration, force and momentum.

- Distance is a measurement of the actual path travelled by an object.

- Displacement is a measurement of how far away an object is from its original position.

- Speed is a measure of how fast something moves.

- It is measured in units such as metres per second (m/s) and kilometres per hour (km/hr).

- Average speed is an overall measurement of speed between two points in time.

- Instantaneous speed is a measure of speed at a particular point in time.

- Average speed can be calculated using the formula:

- Speed can be converted from m/s to km/hr by multiplying by 3.6.

- Speed can be converted from km/hr to m/s by dividing by 3.6.

- Distance travelled can be calculated using the formula:

- Time taken can be calculated using the formula:

- Velocity is a measure of the rate at which displacement changes.

- It can be calculated using the formula:

(Image: PhotoMIX-Company, Pixabay)

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