How do you convert 73 mi/h = ____km/s? Prealgebra Ratios, Proportions, Units and Rates Unit Conversions 1 Answer Saptarshi Chowdhury · Stefan V. Jun 20, 2018 #3.26*10^-2 \ "km/s"#. Explanation: Well, we know that #"1 mile = 1.609 km"# and #"1 hour = 3600 seconds"# So, we have, #"73 miles/hr" = (73*1.609)/3600 \ "km/s"# # \ = "0.0326 km/s"# # =3.26*10^-2 \ "km/s"# Answer link Related questions Every morning for breakfast, Mika drinks 20 cL of orange juice. How many milliliters of orange... David takes 300 milligrams of medicine every day. How many grams is this? A manufacturer ships its product in boxes with edges of 4 inches. If 12 boxes are put in a... How many feet is 15 miles? How many feet in a mile? How many meters in a mile? How many feet are in .55 miles? How many miles are in 100 feet? How do you find out how many feet are in a mile? If one stride is 23 inches, how many steps will make a mile? See all questions in Unit Conversions Impact of this question 7770 views around the world You can reuse this answer Creative Commons License