what is 9.807m/sec2 in miles per hour per second? I have been trying this question forever and can\'t get it. please show work so I can understand how to do it please. Solution 9.807m/sec2 = 9.807m/(1sec*1sec) = 9.807m/(1sec*1/3600hour) ...(since 1 second = 1/3600 hour) =9.807*3600 m/(1sec*1hour) = 35305.2 m per hour per second = 35305.2*0.000621371 miles per hour per second ...(since 1 metre = 0.000621371 miles) = 21.937 miles per hour per second.