2.	A stone is thrown vertically upward with a speed of 20.0 m/s from the edge of a cliff 100.0 m high.

	a.	(8 points) 
		How much later does it reach the bottom of the cliff?












	b.	(8 points)
		What is the speed just before hitting?












	c.	(9 points)
		What total distance did it travel?