2006-10-29 12:39:13 · 4 answers · asked by Timmy 1 in Science & Mathematics ➔ Physics
if it goes 200 ft in 3 seconds, multiply by 20 to get distance per minute
200*20=4000 ft/minute
then multiply by 60 to get distance in ft per hour
4000ft/minute*60minutes/hr=240000ft/hr
then divide by 5280 to convert from ft/hr to mi/hr
240000ft/hr / 5280ft/mi = 45.45 mi/hr
2006-10-29 12:45:31 · answer #1 · answered by Anonymous · 2⤊ 0⤋
Well it's going for 3 seconds. Multiply that by 20 to get to 1 minute. So that means you multiply the 200 by 20. So far you know it's 4000 feet per minute. Multiply by 60 to find out how far in an hour.
4000x60=240,000 feet per hour.
Convert feet to miles
240,000 divided by 5280 (I think!)=45.45 mph
2006-10-29 12:47:31 · answer #2 · answered by Kerry S 2 · 0⤊ 0⤋
60 mph = 88 feet/second is worth remembering - occasionally saves time on homework and tests. You can use it on this problem:
200/3 * 60/88 = 200 * 20 / 88 = 45.4545...
2006-10-29 12:44:58 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Covert 200 feet to miles set that equal to D.
Covert 3 seconds to hours set that to T.
Your answer is D/T.
2006-10-29 12:47:12 · answer #4 · answered by Gene 7 · 0⤊ 0⤋