AVERAGE SPEED CONVERSION (FT/SEC TO MPH)
DIRECTIONS:
Convert the average speed of your dragster from ft/sec to mph by following the step by step procedure below.
You may use a calculator
Step #1:
Record your car’s best 4 or 5 times in the spaces to the right. It is
o.k. if you only have four.
1.
2.
3.
4.
5.
+
_________________________
Step #2:
Add all the times together for your car’s total time.
=
Total time
Step #3:
Divide the total time by the number of races to find average time.
Average time
Round answers in steps #4-7 to the nearest tenth. (o.o)
Step #4:
Divide the track length (32 ft.) by the average time to find the
average feet per second (AFS).
AFS
Step #5:
Multiply the average feet per second (AFS) by 60 to convert to
average feet per minute (AFM).
AFM
Step #6:
Multiply the average feet per minute by 60 to convert to average
feet per hour (AFH).
AFH
Step #7:
Divide the average feet per hour by 5280 (the number of feet in a
mile) to convert your speed to miles per hour (MPH).
MPH