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A B\ a n d\ C D are two chords of a c...

`A B\ a n d\ C D` are two chords of a circle such that `A B=6\ c m ,\ C D=12\ c m\ a n d\ A B C Ddot` If the distance between `A B\ a n d\ C D` is `3\ c m ,` find the radius of the circle.

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The correct Answer is:
3
The x-component of velocity remains same while the y-component of velocity is halved and gets reversed.

so, the ball will cover twice the distance in x-direct compare to before collision
As we use `x=2(1.5-x)`
`x=3-2x`
`3x=3`
`x=1 m`
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