Answer to Question #69950 in Mechanics | Relativity for allyson mendoza

Question

A 76.0-kg boulder is rolling horizontally at the top of a vertical cliff that is 20m above the surface of a lake,the top of the vertical face is a dam located 100m from the foot of the cliff, with the top of the dam level with the surface of the water in the lake. a level plain is 25m below the top of the dam. (a) what must be the minimum speed of the rock just as it leaves the cliff so it will travel to the plain without striking the dam? (b) how far from the foot of the dam does the rock hit the plane.