Chapter 9 drivers ed pearson

blowout

a bald tire, which is a sudden loss of air pressure in the tire

banked curve

a curve that is higher on the outside

center of gravity

a point around which an object's weight is evenly distributed

passive restraint device

a restraint device, such as an air bag, that works automatically and the occupant does need to fasten

active restraint device

a safety belt that a vehicle's occupant must adjust

pitch

a tilting motion from front to back

restraint device

any part of a vehicle that holds an occupant in a collision

energy of motion

kinetic energy

Inertia

Objects at rest tend to stay at rest, and objects in motion tend to stay in motion

Gravity

The force that pulls vehicles towards earth

force of impact

force with which one moving object hits another

perception distance

the distance traveled while you identify your situation

braking distance

the distance your vehicle travels from the time you apply the brakes until your vehicle stops

total stopping distance

the distance your vehicle travels while stopping

reaction distance

the distance your vehicle travels while you identify and react to a hazard

vehicle balance

the distribution of a vehicle's weight in its tires as they contact the ground

traction

the friction which allows tires to grip the roadway

friction

the gripping action that keeps tires from slipping

tread

the grooved surface of a tire that grips the roadway

reaction time

the length of time you take to execute your action in response to a hazard after you identify it

momentum

the tendency of an object to stay in motion or the inertia of an object in motion

perception time

the time it take you to identify, predict, and decide to slow for a hazard

energy of motion

when an object moves, it uses kinetic energy which is...