Question

PLEASE HELP! MEDALS! If a volcano spews a 500 kg rock vertically upward a distance of 500 m, what was its velocity when it left the volcano?

Answer 1

Im not sure srry

Answer 2

Important kinematic:\[v_f^2=v_i^2+2ad\]here acceleration is gravity (g) and down (so negative), at the top, vf is zero, and let's call distance h instead just to make it clear we are talking about height\[0=v_i^2-2gh\]solve for vi