Arace car starting from rest accelerates uniformly at a rare of 4.90 meters per second^2. what is the cars speed after it has traveled 200 meters?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

When using the scientist method, which step comes last?

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).