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, covering 2.5.1 Stopping distance and reaction time, 2.5.2 Factors affecting stopping distance, 2.5.3 Dangers of large decelerations, and 2.5.4 Braking distance and initial speed. Each one has a worked solution and a mark scheme showing where the marks go.