A canon ball is fired from a canon upwards at an angle above the horizontal.
a. Sketch a graph showing the height of this canon ball over time if it was fired at 30°, 45° and 60° above the horizontal.
b. Sketch showing the acceleration of the canon ball over time if it was fired at 30°, 45° and 60° above the horizontal.
c. At what point in the flight of the canon ball is the velocity at a minimum?