A cat, walking along the window ledge of a New York apartment, knocks off a flower pot, which falls to the street 280 feet below. How fast is the flower pot traveling when it hits the street? (Give your answer in ft/s and in mi/hr, given that the acceleration due to gravity is $32 \ \mathrm{ft/s^2}$ and 1 ft/s = 15/22 mi/hr.)

speed in ft/s =
speed in mi/hr =