Unit 2 Combined

An air bag

• is an active restraint.

• automatically inflates to protect an occupant.

• 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.

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.

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.

What rule is used to estimate your total stopping distance under ideal conditions?

• 4-second rule

• 2-second following-distance rule

• 12-second visual lead rule

• 3-second travel rule

Total stopping distance is the distance

• it takes for you to perceive a hazard.

• it takes for you to brake.

• it takes for you to react to a hazard.

• your vehicle travels while you make a stop.

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.

How many collisions occur when a vehicle hits a solid object?

• two

• zero

• three

• one

Braking distance

• increases as speed decreases.

• decreases as speed increases.

• doubles if speed doubles.

• increases as speed increases.