Complete the s lice 11a). A 105kg defensive football player is running with a speed of 4.50m/s in an easterly direction toward a stationary 88kg quarterback. At the same time, another defensive player with a mass of 115kg and speed of 2.50m/s is running south toward the same stationary 88kg quarterback. Both defensive players hit the quarterback at the same moment. a) What is the speed of the three players immediately after contact? Assuming the three players are stuck together as one big object. b) How much heat energy is produced in this collision? Hint: use conservation of momentum (2-D) for part a) and use conservation of energy for part b). 11b)