3. Emanuel Zacchini, the famous human cannonball of the Ringling
Bros. and Barnum & Bailey Circus, was fired out of a cannon with
a speed of 18.0 m/s at an angle of 30.0° to the horizontal. If he
landed in a net 56.6 m away at the same height from which he
was fired, how long was Zacchini in the air?
