Drivers Ed Chapter 9 Quiz & Flashcards on Banked Curves

Questions and Answers

What is the force that pulls objects toward the center of the earth?

Gravity

A vehicle's speed when going downhill tends to?

Increase

Energy of motion is another way of expressing?

Kinetic energy

When a vehicle's speed doubles, it needs about how many times the distance to stop?

4 times the distance to stop Signup and view all the answers

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

Friction Signup and view all the answers

When braking and turning, you use?

Split traction Signup and view all the answers

If a tire is under-inflated, what part grips the road well?

Outside edges of the tire tread Signup and view all the answers

What does all-wheel drive mean?

Power is supplied to four wheels Signup and view all the answers

Good shock absorbers help create?

Traction Signup and view all the answers

In wet weather, with temperatures near freezing, which freezes first?

A bridge freezes before a roadway Signup and view all the answers

A vehicle driven into a curve tends to?

Go in a straight line Signup and view all the answers

If you drive through a curve at a speed higher than the posted speed, your vehicle needs?

More traction to stay on the highway Signup and view all the answers

What is a banked curve?

Is higher on the outside than on the inside Signup and view all the answers

Large vehicles such as trucks and buses have?

Slower stopping ability Signup and view all the answers

What statement best describes reaction time?

It lengthens if the traffic situation is complex Signup and view all the answers

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

Braking distance Signup and view all the answers

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

4-second rule Signup and view all the answers

Three factors that determine the force of impact are?

Speed, weight, and distance between impact and stopping Signup and view all the answers

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

Two Signup and view all the answers

What type of restraint provides protection without having to be handled by the occupant?

Passive restraint Signup and view all the answers

A properly adjusted safety belt fits?

Snugly across the hips and comfortably across the chest Signup and view all the answers

Airbags are designed to?

Be used with seat belts Signup and view all the answers

What does an airbag do?

Automatically inflates to protect an occupant Signup and view all the answers

Which energy-absorbing feature protects the driver in a front-end collision?

The steering wheel and column Signup and view all the answers

A properly installed child safety seat is?

Required in all states for children up to a certain age Signup and view all the answers

Study Notes

Gravity and Motion

Gravity is the force that pulls objects toward the Earth's center.
A vehicle's speed increases when going downhill.
Kinetic energy refers to the energy of motion.
When a vehicle's speed doubles, it requires approximately four times the stopping distance.

Traction and Tires

Friction is the gripping action that prevents tire slipping on the roadway.
Split traction occurs when braking and turning simultaneously.
An under-inflated tire primarily grips the road with its outer edges.

Vehicle Dynamics

All-wheel drive means power is delivered to all four wheels.
Good shock absorbers enhance traction.
In wet conditions near freezing temperatures, bridges freeze before roadways.

Handling Curves

A vehicle tends to travel in a straight line when entering a curve.
Exceeding the posted speed limit on a curve increases the need for traction to maintain stability.
A banked curve is engineered to be higher on the outside than on the inside.

Vehicle Stopping and Reaction

Large vehicles, like trucks and buses, have reduced stopping ability.
Reaction time lengthens with more complex traffic situations.
Braking distance is the distance traveled from the moment brakes are applied until the vehicle stops.

Stopping Distance and Impact

The 4-second rule estimates total stopping distance under ideal conditions.
The force of impact depends on speed, weight, and the distance between impact and stopping.
Two collisions occur when a vehicle strikes a solid object: one internal and one external.

Safety Restraints

A passive restraint provides protection without occupant interaction, such as air bags.
Properly adjusted safety belts fit snugly across the hips and comfortably across the chest.
Air bags are designed to work in conjunction with seat belts and automatically inflate during a collision.
The steering wheel and column serve as energy-absorbing features to protect drivers in front-end collisions.
Child safety seats are mandated in all states for children up to a certain age.

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Description

Test your knowledge about key concepts in Chapter 9 of Drivers Ed. This set includes important terms and definitions related to forces, motion, and energy in driving. Perfect for reinforcing your understanding as you prepare for your driving test.