A boy is rolling a \(0.5 kg\) ball on the frictionless floor with the speed of \(20 ms ^{-1}\). The ball gets deflected …
Q1
A boy is rolling a \(0.5 kg\) ball on the frictionless floor with the speed of \(20 ms ^{-1}\). The ball gets deflected by an obstacle on the way. After deflection it moves with \(5 \%\) of its initial kinetic energy. What is the speed of the ball now? [JEE Main 2021, 17 Mar (Shift 1)]
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