Physics

Problem

2.0\,\text{kg}

cart initially at rest is pulled along a frictionless track by a constant horizontal force of

6.0\,\text{N}

. What is the instantaneous power delivered to the cart

4.0\,\text{s}

after the force begins to act? a)

36\,\text{W}

96\,\text{W}

72\,\text{W}

48\,\text{W}