An automobile of mass accelerates uniformly from to in
PHYSICS · Multi-part · CBSE · Physics · Work, Energy and Power · Work, Energy and Power
Problem
An automobile of mass 900kg accelerates uniformly from 5m s−1 to 25m s−1 in 15s. Answer the following questions based on this information:
(a) State the work–energy theorem.
(b) Calculate the work done on the car during the acceleration.
(c) Determine the average power delivered to the car over the given time interval.
(d) If the engine of the car is rated at 80kW, find what percentage of this rated power was actually used during the acceleration.