1-Travelling at speed

Calculating speed:
A sprinter runs 10 metres in 1 second. His speed is 10 metres per second (m/s). Speed in metres per second tells you how many metres you travel in 1 second.
You can work out speed like this:
speed (metres persecond) = distance travelled (metres)÷ time taken (seconds)

Example:
On a motoway, a car travels 300 metres in 10 seconds.
Distance traveled = 300 metres (m)
Time taken = 10 seconds (s)
Speed = ?
So speed = 300 m ÷ 10s= 30 metres per second (m/s)