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

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**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

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**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.

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**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

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

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

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**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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