Compute all parts of given problem:
Problem: A 124-kg balloon carrying a 22-kg basket is descending with a constant downward velocity of 18.5m/s. A 1.0-kg stone is thrown from the basket with an initial velocity of 16.9m/s perpendicular to the path of the descending balloon, as measured relative to a person at rest in the basket. The person in the basket sees the stone hit the ground 5.20s after being thrown. Assume that the balloon continues its downward descent with the same constant speed of 18.5m/s.
Part I: How high was the balloon when the rock was thrown out?
Part II: How high is the balloon when the rock hits the ground?
Part III: At the instant the rock hits the ground, how far is it from the basket?
Part IV: Just before the rock hits the ground, find its horizontal and vertical velocity components as measured by an observer at rest in the basket.
Part V: Just before the rock hits the ground, find its horizontal and vertical velocity components as measured by an observer at rest on the ground.
I need help to find how high the balloon when the rock was thrown out.