2006-08-01 07:48:53 · 16 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
No point in answering now. It has been solved for you. Thanks for the 2 points though. :0)
2006-08-01 08:11:31 · answer #1 · answered by I love my husband 6 · 0⤊ 0⤋
Easiest way to do this is as follows:
1200 feet in 30 seconds = 40 feet/sec
Since 1 mile = 5280 feet
and 1 hour = 3600 seconds
we have: 40 (1/5280) miles / (1/3600) hour
=> 40 * (1/5280) * (3600) = 27.3 miles/hour
2006-08-01 09:13:33 · answer #2 · answered by Anonymous · 0⤊ 0⤋
This is so easy you can practically do it in your head. 1200 ft in 30 secs = 2400 ft in 60 secs. Multiply this x 60 to get 144000 ft in 3600 secs, or in other words, 144000 ft per hour. Divide 144000 by 5280 (which is the number of feet in a mile) and you get...27.272727 mph. Now what do I get for not only doing your homework for you, but also giving you tips on how to do this yourself next time?
2006-08-01 08:00:18 · answer #3 · answered by TC 2 · 0⤊ 0⤋
1 feet = x miles thus 1200 feet = 1200*x miles.
1 hour = 3600 seconds thus 30 seconds is 3/360 hour
netto 1200 feet per 30 seconds is 1200*x miles per 1/120 hour or 144000*x miles per hour. modulo errors
2006-08-01 07:54:26 · answer #4 · answered by gjmb1960 7 · 0⤊ 0⤋
1 mile=5280 feet
1 feet = 1/5280 mile
1200 feet = 1200/5280 mile in 30 sec(as per ur problem)
in 1 sec 1200/(5280*30) miles
1 hour= 3600 sec
so in 1 hour (3600*1200)/(5280*30) miles
= 27.27 miles
so mph= 27.27
2006-08-05 07:24:07 · answer #5 · answered by maximus 1 · 0⤊ 0⤋
1200 ft /30 seconds * ( 1 mile/5280 feet) * (3600 seconds/ 1 hour)
27.2727 mph
2006-08-01 07:52:40 · answer #6 · answered by jimvalentinojr 6 · 0⤊ 0⤋
(1200/5280)/(30/(60 * 60))
(120/528)/(30/3600)
(5/22)/(3/360)
(5/22)/(1/120)
(5/22)*(120/1)
(600/22)
(300/11)
27.2727272 mph
2006-08-02 04:42:51 · answer #7 · answered by Sherman81 6 · 0⤊ 0⤋
1200/30=40 ft/s
1 ft= 12" and 1"=2.54 cm
therefore 40 ft/s=40*12*2.54=1219.2cm/s=12.192m/s
=43891m/hr=43.89kmph=27.43MPH
2006-08-01 07:59:32 · answer #8 · answered by Zaphod B 2 · 0⤊ 0⤋
1200ft/30s = 40ft/s
1 hour= 60min *60s = 3600s
40ft/s * 3600s = 144000ft/hr
1 mile = 5280ft
144000ft/hr / 5280ft = 27.2727mph
2006-08-01 10:39:43 · answer #9 · answered by gestaltdream 1 · 0⤊ 0⤋
1200ft in 30 seconds = 2400ft per minute
(2400ft/min * 60min/hr) / 5280 ft/mile
= 27.2727 miles / hour
2006-08-01 07:56:12 · answer #10 · answered by Pumpkin 3 · 0⤊ 0⤋
I don't think it would help you to just give you the answer. You got this question so that you can learn how to do it. the way to do it must be in your math book,,,, were you there? or sleeping? or partying and you figure some sucker here will give you your answers?
2006-08-01 07:54:09 · answer #11 · answered by Anonymous · 0⤊ 0⤋