Kilauea in Hawaii is the world's most continously active voclano. Very active volcanoes characteristically eject red hot rocks and lava rather than smoke and ash. Suppose a large rock is ejected from the volcano at an angle 25degree to the horizontal. The rock will strike the squatter area at an altitude 30m below and at a horizontal distance of 2 km from its starting point.
Questions:
1.Find the speed of the rock when it is ejected from the volcano.
2.Find the speed of the rock when it strikes the squatter area.
Please show the steps.