2 ghosts are throwing bowling balls towards each other.

At time = 0, the 2 balls of radius 5 cm. are rolled directly towards each other.

If their distance apart at time = 0 is 40 m, measured from the centers, and their speeds are 80 cm/s, find the time when each ball will be 1/2 intersected in the other.

Give answer correct to 3 decimal places.

Assume that the balls have only 2 dimensions (plane circles).

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