Summary Topic 5 - Dynamics_II.

Total distance over which a vehicle comes to rest

Stopping distance = thinking distance + breaking distance

Thinking distance = the distance the car travels while the
driver reacts to the danger and applies the breaks (reaction
time)

Braking distance = the distance the car travels while it is
slowing down once the breaks have been applied

Greater the speed, the greater the distance travelled during
the same time

When a force is applied to the breaks of a vehicle, work is done
by the brakes onto the wheel, so the vehicles KE reduces and
the temperature of the brakes increase
S

Greater the speed, greater braking force needed to stop the car
(over the same distance), the greater force may lead to brakes
overheating and loss of control

Tiredness
Thinking distance (reaction time)
Distractions

Alcohol or drugs

Friction between the tyre nad road decreases
Factors affecting stopping distance
Icy or wet conditions

Breaks are worn Braking distance

Mass of the car is bigger

When a force causes and object to move through a distance,