Physics

Problem

A motorcycle is travelling east (taken as the positive direction) at

20\,\text{m/s}

. The rider applies the brakes producing a uniform acceleration of

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

. What will be the velocity of the motorcycle

4\,\text{s}

after the brakes are applied? a)

32\,\text{m/s}

east b)

17\,\text{m/s}

east c)

8\,\text{m/s}

east d)

8\,\text{m/s}

west