a student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 19.5 m/s. the cliff is 24.6 m above a flat, horizontal beach. x y 24.6 m 19.5 m/s g o how long after being released does the stone strike the beach below the cliff? the acceleration of gravity is 9.8 m/s 2 . answer in units of s. 013 (part 2 of 3) 10.0 points at impact, what is its speed? answer in units of m/s.