Express a speed of `22(1)/(2)` metre per second in kilometres per hour.

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)

The radius of a wheel of a bus is 45 cm. Determine its speed in kilometres per hour, when its wheel makes 315 revolutions per minute

In the morning,Aasha biked from home to school at an average speed of x kilometres per hour.In the afternoon,having lent her bike to a friend,Aasha walked back home along the same route at an average speed of 3 kilometre per hour.Her average speed for the round trip was 5 kilometre per hour. What is the value of x?

A rocket driven sledge speeds up from 40 metres per second to 55 metres per second in 5.0 seconds, using an engine that produces 3500 newtons of thrust. How much thrust would be needed to get the same increase in speed in 2.0 seconds

The diameter of a wheel of a bus is 90cm which makes 315 revolutions per minute. Determine its speed in kilometres per hour.( Take pi=(22)/(7))