Solve 14 (solve significant digits and proper units)

14. Mr. Richmond is attempting a death defying stunt by firing himself out of a cannon. The cannon will launch Mr. Richmond with a speed of 15.4m/s. A crash mat is located 20.0m from the end of the cannon. You can assume the cannon and the crash mat are at ground level a. Find 2 possible angles that Mr. Richmond could launch at to land on the crash mat [6 marks] b. How long is Mr. Richmond in the air in each case? [3 marks] c. The stuntis not dangerous enough, so a flaming hoop will be located at the apex of the trajectory. Find the height of the hoop for each of the angles found in part a. [4 marks]