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When you park on a hill, the direction your are pointed determines

which direction your car will roll if the brakes fail.

User Coyod
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2 Answers

2 votes

Final answer:

When you park on a hill, the direction your car will roll if the brakes fail is determined by the combination of static and kinetic friction.

Step-by-step explanation:

When you park on a hill, the direction your car will roll if the brakes fail is determined by the combination of static and kinetic friction.

Static friction is the friction between two surfaces that are not moving relative to each other, while kinetic friction is the friction between two surfaces that are moving relative to each other.

When the brakes fail and the car starts to roll, the static friction between the tires and the road prevents the car from immediately sliding down the hill. However, as the car starts moving, the static friction gives way to kinetic friction, which acts in the opposite direction of the car's motion, causing it to roll in the direction it was pointed.

User Particle
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6.2k points
3 votes

Answer:

when you park on a hill, the direction you FRONT WHEELS are pointed determines which direction your will roll if the brakes fail.

Step-by-step explanation:

The law requires you to point your front wheels in the direction that minimizes the risk of a collision. When you park on a hill, and there is a curb on your side of the street, turn your front wheels so that they will roll into the curb. When facing uphill, point your wheels away from the curb. This way, they'll roll backward into it if the brakes fail. When facing downhill, point your wheels toward the curb. This way, they'll roll forward into it if the brakes fail. hope this helps<3

User Jackberry
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