A 76.0 kg rock is rolling horizontally at the top of a vertical cliff that is 20 m above the surface of a lake . The top of the vertical face of a dam is located 100 m 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 25 m below the top of the dam. (a) What must be the minimum speed of the rock just as it leaves the cliff so that it will reach the plain without striking the dam? (b) How far from the foot of the dam does the rock hit the plain?
A 76.0 kg rock is rolling horizontally at the top of a vertical cliff that is 20 m above the surface of a lake . The top of the vertical face of a dam is located 100 m 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 25 m below the top of the dam. (a) What must be the minimum speed of the rock just as it leaves the cliff so that it will reach the plain without striking the dam? (b) How far from the foot of the dam does the rock hit the plain?
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A 76.0 kg rock is rolling horizontally at the top of a vertical
cliff that is 20 m above the surface of a lake . The top of the
vertical face of a dam is located 100 m 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 25 m below the top of the dam. (a) What must be the minimum
speed of the rock just as it leaves the cliff so that it will reach the plain
without striking the dam? (b) How far from the foot of the dam does the
rock hit the plain?
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