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Physics Work,Power & Energy Level: University

Conservation  of energy
A person stands on the edge of a cliff and throws a stone vertically downward with an initial speed of 10m/s. The instant before the stone hits the ground it has 450J of kinetic energy. If the stone were to be thrown horizontally outward from the cliff with the same initial speed of 10m/s how much kinetic energy would it have just before it hits the ground?