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:

[JEE Main 2021, 31 Aug (Shift 2)]

Question

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:

[JEE Main 2021, 31 Aug (Shift 2)]

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