Please answer the question and show work

Previous Page Next Page Page 9 of 10 Question 9 (10 points) A rock is thrown directly upward from the edge of a flat roof of a building that is 56.3 meters tall. The rock misses the building on its way down, and is observed to strike the ground 4.00 seconds after being thrown. Take the acceleration due to gravity to have magnitude 9,80 m/$2 and neglect any effects of air resistance. With what speed was the rock thrown? Please show detailed calculation on the work sheet that is uploaded. If the correct answer is chosen and work is incorrect you get ZERO points. DONOT forget units on the answer sheet. Paragraph V BIUVA E +