Arock weighing 98 newtons is pushed off the edge of a bridge 50 meters above the ground. what was the kinetic energy of the rock at the midway point of its fall?

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods