Physics

Problem

A scooter starts from rest and moves in a straight line. It accelerates uniformly at

3\,\text{m\,s}^{-2}

for the first

5\,\text{s}

and then continues at the velocity reached for the next

4\,\text{s}

. a. (i) Calculate the velocity at the end of the first

5\,\text{s}

. b. (ii) Find the total displacement covered in the whole

9\,\text{s}

journey.