Physics

Problem

A scooter starts from rest and its velocity rises uniformly to

15\,\text{m/s}

3\,\text{s}

. It then maintains this velocity for the next

2\,\text{s}

and finally slows down uniformly to

5\,\text{m/s}

in the last

1\,\text{s}

. Find the average acceleration of the scooter over the entire

6\,\text{s}

interval. a)

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

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

-1.67\,\text{m/s}^2

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