Question

1. _______ occurs between a tire on a vehicle and the roadway when a wall of water separates the tire from roadway.

a) hydroplaning

b) skidding

c) stopping

1. the effects of an airbag are always helpful in a crash, no matter how or where a passenger is seated.

a) true

b) false

1. this traction loss occurs in the rear wheels of a vehicle.

a) braking - induced traction loss

b) acceleration - induced traction loss

Explanation:

Question 7

Hydroplaning is the phenomenon where a layer of water separates the tire from the road, reducing traction. Skidding is a broader term for loss of traction, and stopping is a general action, not specific to water separation. So the correct option is a.

Airbag effectiveness depends on passenger position (e.g., too close, improper seating). They aren't always helpful in all seating scenarios. So the statement is false, option b.

Acceleration - induced traction loss (wheelspin) often occurs in rear - wheel - drive vehicles at the rear wheels. Braking - induced traction loss (lockup) can affect any wheels during braking. So for rear - wheel traction loss from acceleration, the correct option is b.

Answer:

a) Hydroplaning

Question 8