Directions: Read and soive the problems given below. Write your answer together with your solutions in the space below, use another piece of paper if necessary. 1. Mr. H ignites the enthusiasm of the class with a home-made cannon demonstration. The 1-ko cannon is loaded with a 55-gram tennis ball and placed on the floor. Mr. H adds the fuel, waits for its vapors to fill the reaction chamber and then brings a match nearby. The explosion stuns the crowd and propels the ball forward. A photo gate measurement determines that the cannon recoiled backwards with a speed of 7.8 m/s. Determine the speed of the ball