Drivers Ed Lesson 7: Natural Laws & Car Control

 A vehicle’s speed when going downhill tends to

• Decrease

• Stabilize

• Increase

• Inhibit

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

• Gravity

• Energy of motion

• Kinetic energy

• Inertia

The gripping action that keeps a tire from slipping on the roadway is called

• Kinetic energy

• Traction

• Gravity

• Inertia

Any reduction in speed during a collision will

• Increase the damage inflicted

• Not affect how much damage is caused

• Reduce the damage inflicted

• Reduce the damage inflicted by half

If a tire is underinflated, the only part that grips the road well is the

• Center of the tire tread

• Outside edges of the tire tread

• Tire cords

• Wear bar

When a vehicle drives into a curve, your body tends to

• Go in a straight line

• Store energy of motion

• Increase speed

• Increase traction

Large heavy vehicles, such as trucks and buses, have

• Good turning ability for quick turns

• Slow stopping ability

• Fast accelerating ability

• Quick braking ability

If your tires wear out their center treads, they are

• Inflated just right

• Over-sized

• Underinflated

• Overinflated

Three factors that determine force of impact are

• Speed, weight and distance between impact and stopping

• Traction, brakes and steering

• Tire tread, visibility and four-wheel drive

• Shock absorbers, tire pressure and roadway surface

A restraint that provides protection without having to be handled by the occupant is called 

• A passive restraint

• A semi passive restraint

• An active restraint

• A semi active restraint