A motorcyclist starts from rest and reaches a speed of 12 m/s after travelling with uniform acceleration for 6 s. What is his acceleration?

If a sprinter runs a distance of 1000 metres in 9.83 seconds, calculate his average speed in km/h

A motorcyclist drives from place A to B with a uniform speed of 60 km h^-1 and returns from place B to A with a uniform speed of 40 km h^-1. Find his average speed.

An aircraft traveling at 800 km/h accelerates steadily at 10 km/h per second. Taking the speed of sound as 1100 km/h at the aircraft’s altitude, how long will it take to reach the ‘sound barrier’?

If a bus travelling at 40 m/s is subjected to a steady deceleration of 5 m/s², how long will it take to come to rest?