A cart initially at rest is pulled along a frictionless track by a constant…

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

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}

(b)

96\,\text{W}

(c)

72\,\text{W}

(d)

48\,\text{W}