Posted by kissy on Friday, October 23, 2009 at 10:05pm.
traveling 60 mi/h what is the speed in feet per second. How do you find this

math  Ms. Sue, Friday, October 23, 2009 at 10:10pm
60 mile * 5,280 feet = feet per hour
60 seconds * feet per hour = feet per second

math  kissy, Friday, October 23, 2009 at 10:14pm
where did the number 5280 come from.. and i figured it would be with you numbers 19008000 feet per seconds correct.

math  Reiny, Friday, October 23, 2009 at 10:14pm
do it step by step
60 miles/1 hour
= 60(5280) feet/1 hour
= 316800 feet/60 minute
= 316800 feet/3600 seconds
= 88 feet/second

math  kissy, Friday, October 23, 2009 at 10:16pm
i am confused is it divid or times

math  Ms. Sue, Friday, October 23, 2009 at 10:17pm
Both * and () are symbols for multiplication.

math  Reiny, Friday, October 23, 2009 at 10:18pm
BTW, a rough estimate to change mph to feet/sec
is to take half of the rate in miles and add it on .
i.e. multiply the mph rate by 1.5
reason: 1 mph = 1.4666 feet/sec
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