Question 1072733: A stone was thrown straight up from the ground. What was its initial velocity in feet per second if it hit the ground after 15 seconds?
You can put this solution on YOUR website! A stone was thrown straight up from the ground. What was its initial velocity in feet per second if it hit the ground after 15 seconds?
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The ascent time = descent time = 7.5 seconds
The launch speed = impact speed --> it falls for 7.5 seconds
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v = at = 32*7.5 = 240 ft/sec
