The total stoping distance

The distance your car travels from the time you first see the problem until you come to a full stop

Reaction time

The time it takes to get your foot off the gas and onto the brake once you see a hazard.

Perception Distance

The distance your vehicle travels during the time a driver sees a situation ahead.

Braking distance

The distance in how far a vehicle travels after the driver presses the brake pedal.

Passive Restraint device

Airbag

Active Restraint Device.

Seatbelt

Energy of motion

Kinetic energy or the energy an object has because it is moving

Center of gravity

The point around which all of the object’s weight is evenly balanced.

Treads

Tire tread refers to the pattern of grooves, channels, and raised rubber on the surface of a tire that comes into contact with the road.

Gravity

A force that pulls objects toward the center of the earth.

Force of impact

The force with which a moving object hits another object

Friction

The resistance to motion of one surface over or against another.

Traction

The adhesive or holding quality of friction – the gripping action

Inertia

The tendency of an object at rest to stay at rest, and of an object in motion to stay in motion

Centrifugal

A force that keeps your car moving in a straight line.

Penny test

Place a penny in the grove of your tire, if you can see the head then its time to replace the tires

Split or Divided Traction

The laws of nature dictate that you can use all of your traction for steering use all of your traction for braking

Banked Curved

When a turn in the road is designed to be higher on one side than the other

List at least 3 factors that will affect a person’s reaction time?

Distractions

Sleepness

Drug/ alcohol

How does the weight of a larger vehicle influence what that vehicle can or cannot do?

When the weight of an object doubles you need twice the distance to stop the object.

What happens to the center of gravity on a large 4x4 type vehicle?

Jeeps and large vans have difficulty cornering at fast speeds because of raised center of gravity and can tip over during fast turns.

How do tires and inflation influence a vehicle’s traction?

outside/center edges: loss of control & premature tire failure

What are the 4 factors that can affect a car going into a curve?

Speed

Weight

Road shape

Sharp curves

What three (3) factors determine total stopping distance and explain each part?

Perception

Reaction

Braking

Describe the three (3) collisions that occur in a crash?

1st Collision –The Vehicle against another object.

2nd Collision –The driver against the wind shield

3rd Collision –The Driver’s Internal Organs against the skeletal system.

Describe the three (3) factors that affect the force of impact?

Vehicle speed

Vehichle weight

Distractions between impact and stopping