A vehicle's speed when going downhill tends to?

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Prepare for the Thin Blue Line Driver's Education Test. Study with our comprehensive guide featuring flashcards and multiple-choice questions. Each question comes with hints and detailed explanations to ensure you're ready for your exam!

Multiple Choice

A vehicle's speed when going downhill tends to?

Explanation:
Going downhill, gravity pulls the vehicle along the slope, giving it a component of force that acts in the direction of travel. That component causes acceleration, so the vehicle tends to speed up as it descends. As speed increases, air resistance and rolling resistance also rise, but the initial and prevailing tendency is to gain speed due to gravity converting potential energy into kinetic energy. Only braking or unusually high opposing forces would keep or reduce speed, not just coasting downhill.

Going downhill, gravity pulls the vehicle along the slope, giving it a component of force that acts in the direction of travel. That component causes acceleration, so the vehicle tends to speed up as it descends. As speed increases, air resistance and rolling resistance also rise, but the initial and prevailing tendency is to gain speed due to gravity converting potential energy into kinetic energy. Only braking or unusually high opposing forces would keep or reduce speed, not just coasting downhill.

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