stopping distance Flashcards
what is the equation for stopping distance?
thinking distance + braking distance
the greater the ____ of the vehicle, the greater the stopping distance?
the greater the speed of the vehicle, the greater the stopping distance
what is thinking distance?
distance travelled by car during reaction time
what is the typical range of reaction times?
between 0.2 seconds and 0.9 seconds
how can we measure persons reaction time with a ruler?
one person holds ruler and volunteer places fingers on other side, then ruler is dropped and volunteer has to catch it
the further the ruler falls before its caught, the ____ the reaction time?
the further the ruler falls before its caught, the longer the reaction time
what are the 4 factors that affect reaction time/ thinking distance?
tiredness, drugs, alcohol and distractions
what are the 3 factors that affect braking distance?
weather/road surface, conditions of tyres and condition of brakes
how does weather/ road surface increase stopping distance?
wet or icy conditions reduce friction between tyres and road therefore increasing braking distance
how does condition of tyres increase stopping distance?
if tyres are worn, friction between tyres and road will be reduced
how does condition of brakes increase stopping distance?
if brakes are worn, they wont be able to apply as much force as well-maintained brakes
