A tugboat of mass is initially at rest in still water

PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A tugboat of mass

8.0\times10^{5}\,\text{kg}

is initially at rest in still water. Its engines are capable of delivering a constant mechanical power of

3.0\,\text{MW}

beginning at

t=0

. Neglect all forms of resistance. (1) Determine the speed of the tugboat after

120\,\text{s}

have elapsed. (2) Calculate the distance the tugboat has traveled during this

120\,\text{s}

interval. (3) Compute the average net force acting on the tugboat during the same time interval.