A rock is thrown downward into a well that is 8.42 m deep. If the splash is heard 1.07 seconds later, what was the initial speed of the rock? Take the speed in the air to be 343 m/s.
Added by Julia M.
Step 1
07 seconds is the sum of the time the rock takes to fall and the time the sound takes to travel back up. Let's denote the time it takes for the rock to fall as t1 and the time it takes for the sound to travel back up as t2. We know that t1 + t2 = 1.07 seconds. We Show more…
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