A spring is used to launch a ball vertically into air. the spring has a spring constant of 200N/m and is compressed by 5cm. A ball of mass 10g is placed just above the spring. calculate assuming the spring transfers all of its energy to the ball, the velocity of the ball just as it launches.

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