A boy is rolling a 0.5 kg ball on the fr...

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 eneryg. What is the speed of the ball now ?

`1.00 ms^(-1)`

`4.47 ms^(-1)`

`14.41 ms^(-1)`

`19.0 ms^(_1)`

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