2.27-2.33 Human reaction times+Cars

Question 1

Give an example of an experiment used to see Human reaction times

Answer 1

.Ruler drop experiment

Question 2

What two measurements make up the stopping distance of a vehicle?

Answer 2

.The thinking distance and breaking distance

Question 3

Give three ways the stopping distance of a vehicle can be affected

Answer 3

.Mass of the vehicle
.Speed of the vehicle
.Drivers reaction time
.State of vehicles breaks
.State of the road
.Amount of friction between tyre and road surface

Question 4

Give three factors that would affect a drivers reaction time

Answer 4

.Speed
.Concentration
.Tiredness
.Distractions
.Drugs
.Alcohol

Question 5

What are the dangers of large decelerations?

Answer 5

.A greater force is exerted on the car and its passengers
.This force can cause injury

.The change in momentum also causes a great force to be felt

Question 6

What does the work done to bring a vehicle to rest equal?

Answer 6

Its initial kinetic energy