The SI unit for speed is
km/hour
m/s
cm/min
none of the above
The SI unit for speed is m/s.
The average speed of a snail is 0.020 miles/ hour and that of a leopard is 70 miles/ hour. Convert these speeds in SI units.
A crow flies at a speed of 50 km/h for 3 hours and then at a speed of 40 km/h for further 2 hours. Find the average speed of the whole journey.