John Elway throws a football with an initial upward velocity component of 16.0m/s and a horizontal velocity component of 20.0m/s. Ignore air resistance.
a) How much time is required for the football to reach the highest point of trajectory?
b) How high it this point?
c) How much time (after being thrown) is required for the football to return to its original level?
d) How far has it travelled horizontally during this time?