Question

Kilauea in Hawaii is the world's most continuously active volcano. Very active volcanoes characteristically eject red-hot rocks and lava rather than smoke and ash. Suppose a large rock is ejected from the volcano with a speed of 27.4 m/s and at an angle 26 º above the horizontal. The rock strikes the side of the volcano at an altitude 15 m lower than its starting point.

(a) Calculate the time it takes the rock to follow this path. t =___________ units _____________

(b) What are the magnitude and direction of the rock's velocity at impact? v =___________ units___________ θ =__________ units_____________

Answer 1