A person throws a ball straight up in the air, giving it an initial speed of 30 m/s. What is the velocity of the ball after 4.2 s? answers in SI units. Draw a diagram and include coordinate axes.

A ball rolls horizontally off the edge of a brick wall at 4.00 m/s. What is the height of the brick wall if the ball lands a distance of 3.0 m from the base of the wall? answers in SI units. Draw a diagram and include coordinate axes.