For a freely falling object dropped from rest, what is the acceleration at the end of the fifth second of fall?

What is the mass of the same rock on the earth

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

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).