A ball dropped from a point P crosses a point Q in t seconds. The time taken by it to travel from Q to R, if PQ=QR

A ball dropped from a point P crosses a point Q in t seconds. The time

1.	A ball dropped from a point P crosses a point Q in t seconds. The time taken by it to travel from Q to R, if PQ=QR
Answer» t `SQRT2.t` 2T `(sqrt2 - 1) t ` ANSWER :D