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the stopping distance of a vehicle - Coggle Diagram
the stopping distance of a vehicle
what factors effect the stopping vehicle.
the stopping distance- the distance a vehicle will travel from when the driver decides to stop to when the vehicle comes to a stop.
the two parts of the stopping distance are-
the thinking distance- the drivers reaction time
this relies on the reaction time of the driver- the amount of time between wanting to stop and actually putting action into stopping
the reaction time of the driver can be affected, if the reaction time decreases the thinking distance will increase.
reaction time can decrease due to
dugs
alcohol
tiredness
illness
lack of concentration
the faster the vehicle is moving the longer the thinking distance.
thinking distance increases in DIRECT PROPORTION to speed
breaking distance- the time between the brakes being applied and the vehicle stopping
the braking distance is the distance the vehicle will travel after the brakes have been applied
the brakes are meant to do work to bring the vehicle to a halt. the work is equivalent to the kinetic energy of the moving vehicle
kinetic energy = 1/2 x mass x velocity (squared)
kinetic energy increases as the square of velocity
work done by brakes also increases as the square of the velocity
this means the faster the vehicle the more work the brakes have to do.
MASS and SPEED are the main factors affecting braking distance
the braking distance also is effected by the condition of the vehicle
including worn brake pads meaning friction is reduced, worn tyres meaning less friction between the road and the vehicle- it could skid. there could also be ice on the road