Unit 3 chapter 9

Question 1

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

Answer 1

Gravity

Question 2

A vehicle’s speed when going down hill tends to

Answer 2

increase

Question 3

Energy of motion is another way of expressing

Answer 3

kinetic energy

Question 4

Because of it’s energy of motion, when a vehicle’s speed doubles, the vehicle needs about

Answer 4

four times the distance to stop

Question 5

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

Answer 5

traction

Question 6

When braking and turning, you use

Answer 6

changing traction forces

Question 7

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

Answer 7

outside edges of the tire tread

Question 8

All-wheel drive means

Answer 8

power is supplied to four wheels

Question 9

Good shock absorbers

Answer 9

help create traction

Question 10

In wet weather, with temperatures near the freezing point,

Answer 10

a bridge roadway freezes before a highway roadway

Question 11

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

Answer 11

go in a straight line

Question 12

You drive through a curve at a speed higher than the posted speed. Your vehicle

Answer 12

needs more traction to stay on the roadway

Question 13

A banked curve

Answer 13

is higher on the outside than on the inside

Question 14

Large heavy vehicles, such as trucks and buses, have

Answer 14

slow stopping ability

Question 15

Which statement best describes reaction time?
A. It shortens if the traffic situation is complex
B. It lengthens if the traffic situation is complex
C. It is not affected by driver impairment.
D. It averages 3/4 of a second

Answer 15

D

Question 16

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

Answer 16

braking distance

Question 17

If a vehicle increases its speed from 20 mph to 60 mph stopping distance will increase by

Answer 17

9 times

Question 18

Three factors that determine force of impact are

Answer 18

speed, weight, and distance between impact and stopping.

Question 19

Any reduction in speed during a collision will

Answer 19

reduce the damage inflicted

Question 20

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

Answer 20

a passive restraint

Question 21

A properly adjusted safety belt

Answer 21

fits snugly across the hips and comfortably across the chest.

Question 22

Air bags are designed to

Answer 22

be used with safety belts

Question 23

An air bag

Answer 23

automatically inflates to protect an occupant

Question 24

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

Answer 24

crush zones

Question 25

A properly installed child safety seat is

Answer 25

required in all states for children up to a certain age