A toy car of mass is pulled forward by a horizontal force of

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

Problem

A toy car of mass

1.5\,\text{kg}

is pulled forward by a horizontal force of

12\,\text{N}

. At a certain instant its speed along the line of action of the force is

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

. Calculate the instantaneous power delivered by the force at that instant. (a)

18\,\text{W}

(b)

36\,\text{W}

(c)

54\,\text{W}

(d)

24\,\text{W}