Calculating Average Speed

• Average speed can be calculated using the following formula:

• This can be abbreviated as:

• The units for speed will depend on the units for distance and time.

• If distance is measured in metres (m) and time is measured in seconds (s), the units for speed will be metres per second (m/s).

• If distance is measured in kilometres (km) and time is measured in hours (hr), the units for speed will be kilometres per hour (km/hr).

• Speed can be converted between m/s and km/hr using the following formula: