Physics

Problem

A scooter moves along a straight road with an initial speed of

6\,\text{m/s}

. It then accelerates uniformly at

1.5\,\text{m/s}^2

until its speed becomes

21\,\text{m/s}

. (i) Calculate the time taken by the scooter to reach the speed of

21\,\text{m/s}

. (ii) During this time, determine the distance travelled by the scooter.