Physics
Grade-7
Easy
Question
Which one of the two bodies shown below has more kinetic energy when velocity is constant?
- 2 kg
- 6 kg
- Both
- None
Hint:
6 kg
The correct answer is: 6 kg
Kinetic energy is directly proportional to the mass of the object and the square of its velocity.
Hence, if the velocity remains constant kinetic energy will be greater for the object which has more mass.
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