# Drivers Ed Chapter 5 Review.

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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?

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?

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 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?

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