An electric scooter of total mass experiences a constant resistive force of while…

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

Problem

An electric scooter of total mass

75\,\text{kg}

experiences a constant resistive force of

200\,\text{N}

while moving on a level road. The scooter’s motor can deliver a continuous power of

600\,\text{W}

. (i) Calculate the maximum constant speed the scooter can maintain. Give your answer in

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

. (ii) Express this speed in

\text{km\,h}^{-1}

to the nearest whole number.