Physics

Problem

The displacement of a cart moving along a straight line is

0\,\text{m}

t = 0\,\text{s}

6\,\text{m}

t = 2\,\text{s}

, remains

6\,\text{m}

until

t = 5\,\text{s}

, and is

-3\,\text{m}

t = 8\,\text{s}

. In which time interval is the cart’s velocity negative? a)

2

–

8\,\text{s}

b) It is never negative. c)

5

–

8\,\text{s}

2

–

5\,\text{s}