. On a touchdown attempt, a 95 kg running back run toward the end zone at 3.75 m/s. A 111 kg line backer moving at 4.10 m/s meets the runner in a head on collision. a) If the two players stick together, what is their velocity immediately after the collision

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)