Physics

Problem

4\,\text{kg}

cart is moving due east at

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

. A constant horizontal force of

200\,\text{N}

acts on it due west for

0.50\,\text{s}

. Determine the cart’s velocity just after the force stops acting. a)

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

due west b)

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

due east c)

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

due west d)

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

due east