An autonomous delivery vehicle is travelling at a constant speed of 26 m/s along a straight horizontal guide-track.
Its sensors detect an unexpected obstacle ahead. There is a processing latency (reaction time) between the sensors detecting the obstacle and the physical brakes being activated, during which the vehicle continues to travel at its constant speed.
The vehicle travels a distance of 11 m during this latency period.
Calculate the vehicle's processing latency.
Give your answer to 2 significant figures.
39 exam-style questions on Edexcel GCSE Physics 2.5 Stopping and braking distances. Each one has a worked solution and a mark scheme showing where the marks go.