Question

A rock is thrown directly upward from the edge of the roof of a building that is 44.5 meters…

A rock is thrown directly upward from the edge of the roof of a building that is 44.5 meters tall. The rock misses the building on its way down, and is observed tostrike the ground 4.00 seconds after being thrown. Take the acceleration due to gravity to have magnitude 9.80 m/s^2 and neglect any effects of air resistance. Withwhat speed was the rock thrown?

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