Stopping and Braking 0.0 / 5 ? SciencePhysicsGCSEAQA Created by: Lilyk30Created on: 31-01-18 11:49 What is the thinking distance? The distance travelled during the driver's reaction time 1 of 10 What is the braking distance? The distance travelled under braking force. 2 of 10 How do you calculate stopping distance? Stopping distance = thinking distance + braking distance 3 of 10 What is reaction time? How long it takes for someone to react to a stimulus 4 of 10 What are 3 factors that cause the driver to react slower? Tiredness, drugs, alcohol, mobile phone use and distractions. 5 of 10 How do you measure reaction time? Use lights or sounds as a start signal then measure how long it takes for someone to react; dropping a ruler and catching it as it falls. 6 of 10 Give three factors that affect braking distance Conditions on the road, vehicles, weather, worn brakes, over/ under inflated tyres. 7 of 10 How does the temperature of the brakes increase? Work done by frictional force transfers kinetic energy into heat energy, increasing the temperature of the brakes. 8 of 10 What happens if the braking force is too large? The brakes overheat and tyres lose traction which results in skidding. 9 of 10 How is work done calculated? work done = force x distance (braking) 10 of 10
Comments
No comments have yet been made