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Problem 7. (1 point) A stone is thrown from a rooftop at time to seconds. Its position at time is given by F(0) -81-4t) + (24.5 - 4.9%). The origin is at the base of the building, which is standing on fat ground. Distance is measured in meters. The vector i points east, j points north, and k points up, (a) How high is the rooftop? 24.5 meters (6) When does the stone hit the ground? 5 seconds. le) Where does the stone hit the ground? 19,6 in meters) (c) How tast is the stone moving when it hits the ground? 13.26 in meters per second) Note: You can ear partial credit on this