Show all your work. (5marks) 1. Two objects collide and bounce off each other. Linear momentum A) is definitely conserved. 8) Is definitely not conserved. C) is conserved only if the collision is elastic. D) Is conserved only if the environment is frictionless. 2. Two equal mass balls (one red and the other blue) are dropped from the same height, and rebound off the floor. The red ball rebounds to a higher position. Which ball is subjected to the greater magnitude of impulse during its collision with the floor? A) It's impossible to tell since the time intervals and forces are unknown. B) Both balls were subjected to the same magnitude impulse. C) the blue ball D) the red ball 3. In a game of pool, two fast moving balls moving towards other collide. One ball stops, while the other ball moves slowly away. The type of collision is A) elastic. B) inelastic. C) completely inelastic. D) any of the above, depending on the mass of the balls