physics

A log is floating on swiftly moving water. A stone is dropped from rest from a 84-m-high bridge and lands on the log as it passes under the bridge. If the log moves with a constant speed of 3.6 m/s, what is the horizontal distance between the log and the bridge when the stone is released?

Will someone please help me step by step on how to do this confusing problem?

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  1. Find time is takes the stone to fall the 84m ( -84 = 1/2(-9.8)T^2 ). Then plug into Time x Velocity of log (3.6) = answer

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