AP Physics 1 Question 359: Answer and Explanation

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Question: 359

7. If an object's kinetic energy is doubled, what happens to its speed?

  • A. It increases by a factor of /2.
  • B. It increases by a factor of .
  • C. It is doubled.
  • D. It is quadrupled.

Correct Answer: B



Kinetic energy is related to speed according to the equation . Comparing the new kinetic energy, K', to the original kinetic energy yields