forces - vehicle stopping distance and force/braking Flashcards
(12 cards)
what is the stopping distance
the total distance traveled from when the driver first spots the obstruction to when the car tops
what is the thinking difference
the distance travelled by the car during the drivers reaction time
what is the reaction time
the time taken for the driver to stop the obstruction, make a decision and then mover their foot onto the brake
what is the braking distance
the distance from when the driver applies the brakes to when the car stops
the greater the speed of the vehicle …
the greater the stopping time
how would fatigue effect a driver
a tried drive will have a longer reaction time compared to an alert one
how can alcohol and drugs effect reaction time
it can make it longer
if reaction time is effected what else is
thinking distance
what factors can effect braking distance
- wet/icy whether
- worn tyres
- worn breaks
what does kinetic energy depend on
the velocity squared
when braking, what does the kinetic energy of the car turn into
thermal energy via friction
the greater the speed …
the greater braking force required to stop the car in a certain distance
