A soccer player kicks a rock horizontally off a 390-m-high
A soccer player kicks a rock horizontally off a 39.0-m-high cliff into a pool of water. If the player hears the sound of the splash 2.97 s later, what was the initial speed given to the rock? Assume the speed of sound in air is 343 m/s.
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a soccer player kicks a rock horizontally off a 390-m-high cliff into a pool of water if the player hears the sound of
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