When the speed of a motor vehicle doubles, the amount of kinetic energy:

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Multiple Choice

When the speed of a motor vehicle doubles, the amount of kinetic energy:

Explanation:
Kinetic energy scales with the square of speed. Since KE = (1/2) m v^2, if speed doubles (v → 2v), the energy becomes (1/2) m (2v)^2 = 4 × (1/2) m v^2. With mass unchanged, the kinetic energy four times as large. So quadruples. Doubling, unchanged, or tripling would require different relationships to speed, which aren’t present here.

Kinetic energy scales with the square of speed. Since KE = (1/2) m v^2, if speed doubles (v → 2v), the energy becomes (1/2) m (2v)^2 = 4 × (1/2) m v^2. With mass unchanged, the kinetic energy four times as large. So quadruples. Doubling, unchanged, or tripling would require different relationships to speed, which aren’t present here.

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