A vehicle of mass M travels at velocity V. If its kinetic energy increases by a factor of 9, how much does its velocity change?

Question

A vehicle of mass M travels at velocity V. If its kinetic energy increases by a factor of 9, how much does its velocity change? — Exam MCQ

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A. The velocity is tripled — Kinetic energy is proportional to v². If K becomes 9 times larger, velocity becomes √9 = 3 times larger.

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B. The velocity is increased nine times

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C. The velocity is quadrupled

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D. The velocity is doubled