PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A car of mass 1200kg accelerates uniformly from 5ms−1 to 25ms−1 in 8s. Neglect all resistive forces.
(i) Find the increase in kinetic energy of the car.
(ii) Using your answer from part (i), calculate the average power developed by the engine during the acceleration.
(iii) Express the power obtained in part (ii) in kilowatts.