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Work Power And Energy

JEE Main 2021 (Online) 31st August Evening Shift

MCQ+4 / -12021
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 :-

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