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BDifficulty 2/5

What form of motion energy decreases when a vehicle slows down during braking?

Correct answer

Kinetic energy

Kinetic energy decreases. Friction brakes transform part of it into heat. A regenerative system can convert part into electrical energy stored in the battery. The recovered or dissipated proportion depends on the system and conditions; energy does not disappear and not every braking event produces mainly heat.

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  • Kinetic energy

  • Nuclear energy

  • Electrical energy

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