• A stone is thrown straight down from the edge of a roof, 1025 feet above the ground, at a speed of 7 feet per second.
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•  A. Remembering that the acceleration due to gravity is -32 feet per second squared, how high is the stone 4 seconds later?
•  B. At what time does the stone hit the ground?
• C. What is the velocity of the stone when it hits the ground? 

Answer rating: 100% (QA)

A To find out how high the stone is 4 seconds later we can use the equation of motion height initial... View the full answer