6. A quarterback can throw a receiver a high, lazy "lob" pass or a low, quick "bullet" pass. These passes are indicated by curves 1 and 2, respectively, in the figure below. (a) The
lob pass is thrown with an initial speed of 21.5m/s and its time of flight is 3.97s. What is
the launch angle? (b) The bullet pass is thrown with a launch angle of 25.0°. What is the
initial speed of this pass? (c) What is the time of flight of the bullet pass?