The force that pulls objects toward the center of the earth is

• gravity.
• energy of motion.
• kinetic energy.
• inertia.

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

What are the most important parts of the control system?

• four tires
• brakes
• the steering wheel and column
• the clutch and accelerator

All-wheel drive means

• power is supplied to four wheels.
• all four tires are inflated properly.
• your traction is reduced.
• power is in the front tires only.

Good shock absorbers

• last for the life of the vehicle.
• decrease available traction.
• are needed only on foreign vehicles.
• help create traction.

A lighter vehicle

• takes a long distance to stop.
• is the safest of all vehicles.
• uses more kinetic energy to stop than a large vehicle.
• can accelerate and stop more quickly than a large vehicle.

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 your vehicle travels while you respond to a road hazard is called  

• braking distance.
• perception distance.
• reaction distance.
• stopping distance.

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.

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.