Mr. Chowder ignites the enthusiasm of the class with a home-made cannon demonstration. The 1.33-kg cannon is loaded with a 53.6-gram tennis ball and placed on the floor. Mr. Chowder 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 photogate measurement determines that the cannon recoiled backwards with a speed of 7.71 m/s. Determine the speed of the ball. Ball Speed m/s Info Attempts: 0/00 Submit Help Links Points: 0/1 - 2. MC6Q2 A 71.6-kg boy and a 50.0-kg girl, both wearing skates face each other at rest on a skating rink. The boy pushes the girl, sending her eastward with a speed of 7.74 m/s. Neglecting friction, determine the subsequent speed of the boy. Info Attempts: 0/00 Submit Speed of Boy m/s Help Links - 3. MC6Q3 Points: 0/1 Ambrose meanders over to the frozen-over Bluebird Lake after school. His mass is 48.5 kg. He throws a 0.740-kg stone to the west at 19.0 m/s. Assuming negligible friction between Ambrose and the ice, determine his eastward velocity after delivering the impulse to the stone.