A car starts from rest and moves in a straight line with uniform acceleration
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A car starts from rest and moves in a straight line with uniform acceleration. In the first 20 s it covers a distance of 400 m.
(i) Calculate the magnitude of the acceleration of the car.
(ii) Determine the speed of the car at the end of the 20 s interval.
(iii) If immediately after this interval the car continues to travel for a further 10 s with the speed obtained in part (ii), find the total distance covered in the first 30 s from the start.