A ball is launched upward at an initial speed of 3 m/s. How high did the ball move if it took 4 seconds for the ball to reach its maximum height?

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.