PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
An automobile of mass 1000kg moves along a straight, level road. The engine supplies a constant forward force of 2500N while air resistance and rolling friction together offer 1500N opposite to the motion. The car starts from rest.
Answer the following questions.
(i) Calculate the acceleration of the car.
(ii) How far will the car travel in the first 5s of its motion?
(iii) What will be its speed at the end of 5s?