If a sprinter runs a distance of 100 metres in 9.83 seconds, calculate his average speed in km/h.

A snail covers a distance of 100 metres in 50 hours. Calculate the average speed of snail in km/h.

A tortoise moves a distance of 100 metres in 15 minutes. What is the average speed of tortoise in km/h ?

A scooterist covers a distance of 3 kilometres in 5 minutes. Calculate his speed in: (a) centimetres per second (cm/s) (b) metres per second (m/s) (c ) kilometres per hour (km/h)