Physics

Problem

5\,\text{kg}

cart slides on a horizontal surface at

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

and eventually stops due to kinetic friction. The coefficient of kinetic friction between the cart and the surface is

0.20

. Take

g = 10\,\text{m\,s}^{-2}

. What is the magnitude of the horizontal impulse delivered to the cart by the surface during the entire slowing-down process? a)

25\,\text{N\,s}

20\,\text{N\,s}

10\,\text{N\,s}

16\,\text{N\,s}