Question 689226
You are given the problem in miles per hour and would like to convert it to miles per second. So we must use a conversion factors (1)from hours to minutes and (2)minutes to seconds.

{{{(55 miles)/(1 hour)}}}  x  {{{(1 hour)/(60 minutes)}}}  x  {{{(1 minute)/(60 seconds)}}}


={{{(55 miles)/(1 hour)}}}  x  {{{(1 hour)/(60 minute)}}}  x  {{{(1 minute)/(60 seconds)}}}


={{{(55 miles)/(60 x 60 seconds)}}}   


={{{(55 miles)/(3600 seconds)}}}={{{(11 miles)/(720 seconds)}}}= .01527778 mi/sec