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Two billiard balls are rolling on a fl...

Two billiard balls are rolling on a flat table. One has velocity components `v_x=1m*s^(-1), v_y=sqrt(3) m*s^(-1)` and the other has components `v_x^'=2m*s^(-1) and v_y^'=2m*s^(-1)` . If both the balls start moving from the same point, what is the angle between their paths ?

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The correct Answer is:
`15^@`
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