The number that is given in the question and that needs to be converted is 3.0 * (10)^10 cm/s This can be simplified and written as 30000000000 cm/s. It has to be converted to ft/s. 1 cm = 0.0328084 feet Then 30000000000 cm = 0.0328084 * 30000000000 ft = 984252000 ft So 3.0 x (10)^10 cm/s = 984252000 ft/s I hope the answer has come to your help.