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Physics

When the speed of a moving object is doubled, then its kinetic energy:

  1. remains the same
  2. decreases
  3. is doubled
  4. becomes four times

Work, Energy & Power

ICSE 2023

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Answer

becomes four times

Reason — According to the formula :

Kinetic energy = 12\dfrac{1}{2}mv2

Hence, when speed (v) is doubled the kinetic energy increases by 4 times.

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