Write cquations to describe the position, velocity, and accel- cration as a function of time. 1. a fastball thrown by a pitcher with an initial velocity of 28.9 m/s which is slowed down by air resistance so that it's velocity as a function of time is given by v(t)- 28.9-2.4 t. give the position as the distance from home plate (initially -18.4 m). 5. your phone when you accidentally nudge it off a 1.5 m tall table.

Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).