Physics
Grade-7
Easy

Question

Which one of the two bodies shown below has more kinetic energy when both have the same speed?

  1. 5 kg
  2. 15 kg
  3. Both
  4. None

hintHint:

15 kg

The correct answer is: 15 kg


    Kinetic energy is directly proportional to the mass of the object and the square of its velocity.
    Hence, if velocity remains constant the kinetic energy will be greater for the object which has greater mass.

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