If an automobile is traveling 75mph what is its speed in fee

If an automobile is traveling 75mph, what is its speed in feet per second?

Solution

Given:automobile is traveling 75mph,.

            then 75 miles / 1 hour =75 miles / 60*60 sec

                                                 =0.02083 miles /sec =0.021miles/sec

                          Then its speed in feet per second is:

                                5280 is number of feet per 1 mile

                          so multiply 0.021 with5280 =110 feet/sec.

answer is:110 feet/sec