The initial kinetic energy is equal to the final kinetic energy
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B
The final kinetic energy is less than the initial kinetic energy
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C
The kinetic energy remains constant
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D
The kinetic energy first increases then decreases.
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Solution
The correct option is A The initial kinetic energy is equal to the final kinetic energy Velocity of seperation equals velocity of approach, Thus KE remains conserved.
NOTE : Kinetic energy remaining conserved does not mean it remains constant.