Physics

Problem

4.0\,\text{kg}

cart is moving

3.0\,\text{m}\,\text{s}^{-1}

to the right. It then experiences a net horizontal force of

6.0\,\text{N}

to the right for

2.0\,\text{s}

, followed immediately by a net force of

4.0\,\text{N}

to the left for

1.0\,\text{s}

. What is the cart’s speed and direction at the end of the

3.0\,\text{s}

interval? a)

7.0\,\text{m}\,\text{s}^{-1}

to the right b)

5.0\,\text{m}\,\text{s}^{-1}

to the right c)

4.5\,\text{m}\,\text{s}^{-1}

to the right d)

1.0\,\text{m}\,\text{s}^{-1}

to the left