NEET Physics Kinetic Energy MCQ Question
Which of the following statements about kinetic energy are correct?
Kinetic energy is conserved in elastic collisions.
Kinetic energy can be converted entirely to potential energy in a closed system.
In elastic collisions, the total kinetic energy after the collision can be less than before the collision.
The fractional kinetic energy lost during a collision can be calculated using specific mass ratios.
Correct Answer
Detailed Explanation
Kinetic energy is indeed conserved in elastic collisions, as stated in the context where it refers to the conservation of kinetic energy during such events. Option B is incorrect as conversion to potential energy is not always complete, C is wrong as elastic collisions maintain total kinetic energy, and D is partially correct but does not encompass all scenarios since fractional kinetic energy loss does not apply universally.
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