SOLUTION: susan drops her camera in the river from a bridge that is 400 feet high. How long is it before she hears the splash?

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Question 558158: susan drops her camera in the river from a bridge that is 400 feet high. How long is it before she hears the splash?
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
h%28t%29+=+-16t%5E2%2Bv%5B0%5Dt%2Bh%5B0%5D Initial velocity, v%5B0%5D+=+0 and initial height, h%5B0%5D+=+400ft.
When the camera hits the water, h = 0, so...
-16t%5E2%2B400+=+0
16t%5E2+=+400 Divide by 16.
t%5E2+=+25 Take the square root.
t+=+5seconds, neglecting the time it takes for the sound of the splash to travel the 400 feet to Susan's ears.