An iron ball is thrown into the Atlantic Ocean. Density of iron is 7856 kg/m^3. Density of salt water is 1020 kg/m^3. Ignoring the effects of drag, calculate the acceleration (in m/s^2) with which the iron ball sinks before reaching its terminal velocity. g = 10 m/s^2. Type your answer in m/s^2, to the second decimal place.