JEE MainPhysicsWork Power and EnergyMCQ+4 / −1
A block moving horizontally on a smooth surface with a speed of 40 m/s splits into two parts with masses in the ratio of 1 : 2. If the smaller part moves at 60 m/s in the same direction, then the fractional change in kinetic energy is :-
- A
- B
- C
- D
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