A car goes faster and faster backwards down a long driveway. We define forward velocity in this problem as positive, so backward velocity is negative. The car's
velocity changes from -2.0 m/s to -9.0 m/s in a 2.0 s time interval. Find the average
acceleration.

9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.