A car is travelling along a straight road at 25 m s-1. The driver has a reaction time of 0.8 s, during which the car continues at constant speed. The brakes are then applied and the car decelerates uniformly at 5 m s-2 until it stops.
Find the distance travelled during the reaction time.
Find the distance travelled while the car is braking.
Find the total stopping time and the total stopping distance.
260 exam-style questions on OCR A Level Maths 3.2 Kinematics, covering 3.2.1 Language of kinematics, 3.2.2 Graphs in kinematics, 3.2.3 Displacement-time and velocity-time graphs, 3.2.4 Constant acceleration formulae, 3.2.5 Constant acceleration in two dimensions (A-level only), 3.2.6 Non-uniform acceleration in one dimension (A-level only), 3.2.7 Non-uniform acceleration in two dimensions (A-level only), 3.2.8 Motion under gravity using vectors (A-level only), and 3.2.9 Projectiles (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.