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Download Mechanical Energy: Sum of all the Kinetic and Potential Energy
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Reference Table Review Mechanical Energy: Sum of all the Kinetic and Potential Energy 4 types of energy in physics: KE, PEg , PE s, Q kinetic energy gravitational potential energy elastic potential energy Internal Energy (heat) only 3 of them figure into mechanical energy: not part of mechanical energy Conservation of Energy cliff after 1. ID the system of objects and types of energy involved 2. set total sum of E's in one place = total sum of E's in another 3. expand and solve for unknown mass cancels, this can be solved for either the velocity or the height, depending on the problem 5.0 m cliff A rock is thrown downward with an unknown initial speed from a height of 5.0 m. Just prior to striking the ground, the rock's speed is 15 m/s. Ignoring air resistance, use conservation of energy to determine the rock's initial speed.
