Unit 2 Natural Laws

An air bag

• is an active restraint.

• automatically inflates to protect an occupant and is a passive restraint.

• must be fastened and adjusted by the occupant.

• is not a reliable protective device.

A vehicle going uphill works

• with the force of gravity.

• against the force of gravity.

• against centrifugal force.

• with centrifugal force.

Modern seat belts

• are installed only when requested.

• are passive restraint devices.

• should fit somewhat loosely across the chest.

• are three-point lap and shoulder safety belts.

When a vehicle's speed triples, how much more distance does it need to stop?

• about double the distance

• about nine times the distance

• about six times the distance

• about three times the distance

Energy of motion is another way of expressing

• kinetic energy.

• effect of wind on vehicle control.

• mileage rating of a vehicle.

• the way vehicle bodies are designed.

In wet weather, with temperatures near the freezing point,

• a highway roadway freezes before a bridge roadway.

• a bridge roadway freezes before a highway roadway.

• bridge and highway roadways will freeze at the same time.

• bridge and highway roadways will not freeze.

The second collision occurs when

• a vehicle strikes a parked vehicle.

• the occupants hit the inside of the vehicle after a collision.

• a vehicle loses control and spins out.

• a vehicle is struck by a vehicle following it.

The distance a vehicle travels from the time the driver applies the brakes until the vehicle stops is

• perception distance.

• total stopping distance.

• reaction distance.

• braking distance.

A banked curve

• is cost prohibitive.

• is higher on the inside than on the outside.

• is higher on the outside than on the inside.

• causes your vehicle to move to the middle of the curve.

Air bags are designed to

• be used with safety belts.

• protect in all types of collisions.

• take up most of the room on your dashboard for safety purposes.

• protect all occupants of the vehicle, front and back.