Drivers Ed

Chapter 5 Review

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

• gravity

If you place a filled roof-top carrier on a car, what happens to the center of gravity?

• raises it

The energy of motion is called _____.

• kinetic energy

If a car’s speed doubles, the distance it will take to stop is increased by ____.

• 4

What action keeps the tires on the road?

• friction

What do tire treads have to do with water flow?

• pushes water away from the tire

What do shock absorbers do?

• help create traction

A car driven around a curve has a natural tendency to go in a ____ path.

• straight

The higher your speed, the more _______ is required.

• traction

perception + reaction + braking distance = ____

• total stopping distance

What happens to braking distance as speed doubles?

• it doubles

What does the 4 second rule mean?

• it’s the time it takes you to react to a traffic event

What does the second collision consist of?

• the occupants hitting the inside of the car after the initial collision

Is a seatbelt and active or passive restraint?

• active

What is a restraint called that doesn’t require the driver to handle it?

• passive restraint

The point at which all weight is evenly balanced is known as the

• center of gravity

What does adding weight to the top of a car do to the stability?

• makes it worse

If a tire is underinflated, the only part that touches the road is the

• outside edges

tires, shock absorbers, and steering systems all affect

• traction

Which freezes first – the bridge, or the road?

• bridge

When is the best time to adjust your speed when maneuvering a curve?

• before the curve

If your brakes are worn unevenly, your car will ____ during a sudden stop.

• pull to one side

The relationship of vehicle weight to force of impact is

• double the weight, double the impact

What are 2 things that help you maintain good traction?

• car condition and road conditions

what is the best type of surface to drive on?

• clean, dry, level concrete

What are the 4 factors that affect the control of your car in a curve.

• speed• banked curves• sharpness of curve• load

Explain split/divided traction.

• ½ used for turning, ½ for braking

What are the 4 factors that affect braking distance?

• speed• road surface• hills• load

What are the 3 factors that determine the force of impact?

• speed• weight• distance between impact and stop

What is the PA child safety law?

• children under 4 – federally approved safety seats; 4-7 booster seat; 8-17 must be buckled