if it takes 16.785 second to go 1/2 mile how fast is that in m.p.h.?
439730
107.23 mph.  Do I get 10 pts?
26755
186,000 miles a second vs 220 some odd miles per second?  yeah, it is\n\nedit- \nok, to the person below, yes, I meant per hour, and was lowballing it... \n\nspeed of sound at sea level = 340.29 m / s
817708
1 mile = 1.61 kilometers\n\nSo just divide 1.61 into 200 to find your answer.
133260
.68181818181818 etc. \n(a little more than 1/2 a foot per second)
577594
12.66 mph\n\nor 12.65558195 to be (more) exact!
899142
1 feet per second = 0.681818182 miles per hour \n 0.0014 fps=0.00096 mph
1009103
We have a formula:\nSpeed = Distance / Time\nhere Time= Distance /Speed.==D/S\nD=100km in both cases\nS1= 125km/hr; S2= 80km/hr\n\nT1=D/S1==100/125 hrs === 4/5hrs===4/5*60mins= 48mins\nT2=D/S2==100/80 hrs ===5/4 hrs ===5/4*60 mins= 75mins\n\nTime saved = T2-T1==75-48=27 mins.\n\nIs this clear buddy
106328
there are 2.23 km in a mile and it takes about a half hour to walk a mile so about 15 minutes i would assume.\n\nYou can run a mile in 4-6 minutes.
415548
light travels at 186,000 miles per second, the earth is 25,000 miles around....\n\n25000/186000= 0.1344 seconds
271469
Well when you look at power to weight ratio I would say it will run around 13 seconds in a quarter mile.
712175
Distance = Rate * Time\n\nYour first question does not make sense.  you are telling us that they will streak around a 1.5 mile track at 15 mph for 15 minutes and then asking us how long it would take.  You just told us 15 minutes.\n\nif you want to know "how far would they have traveled in 15 minutes at a rate of 15 mph on a 1.5 mile track" you can find out by:\n\nthe answer is 3.75 miles.\n\nD=RT\nD = 15 miles per hour * 15 minutes\nfirst you have make sure you are using the same units for time, either use minutes or hour for both the rate and time.\n\nI chose to change the 15 minutes into hours which = 1/4 of an hour.  use a ratio:  of minutes to hours and reduce 15/60 = 1/4\n\nthen multiply  15 m/h * 1/4h and you end up with 3.75 miles.\n\nwhen you say 15 miles per hour it = 15miles/1 hour in fraction form.\n\nwhen you multiply 15 miles / 1 hour * 1 hour /4  you cancel out the hours units and you are left with only miles.\n\nIf you want to know how long it would take them to travel one time around the track:\n\nD = RT\nT= D/R\n\nTime = 1.5 miles / (15 miles / 1 hour)\n\nRemember when you divide fractions you invert the second one and them multiply them:\n\nTime = 1.5 miles * 1 hour / 15 miles\nmultiply and cnacel out the miles unit and you get:\n(1.5 * 1) / 15\n1.5/15\n= .1 hours\n\nchange .1 hours into minutes:\n1 hour = 60 minutes so:\n.1 * 60 = 6 minutes\n\nit takes them 6 minutes to do a lap, (which is crazy for someone that size)
562985
ummmm...2 maybe 3 seconds
1152213
The trick to conversions is to always multiply by a fraction that equals one.  For example, you want to convert minutes to seconds so use  60seconds/minute or 1 minute/60 seconds.  Just flip it around until you get what you want to cancel out.\n\nIn your problem  50 yard/0.075 minutes.  You want the minutes to be replaced by seconds so you use 1minute/60 seconds:\n\n50 yard/0.075 minutes*1minute/60 seconds=11.1 yards/second\n\nlook how the minutes cancel out.\n\nNow you want to convert yards to miles so use either 1760 yards/mile or 1mile/1760 yards.  Notice how the fractions here are equal to one.\n\n11.1 yards/second*1 mile/1760 yards=.00631\n\nSee how the yards cancel out.\n\nWhen you get better at it, you can string them together\n\n50yards/0.075 minutes*1minute/60 seconds*1 mile/1760 yards=.00631miles/sec\n\nGo through it and see how the units all cancel to get what you want.\n\nDimensional analysis is a very useful tool for figuring things out and can help you check for mistakes during a test.
893501
44.44444 mph.  If the distance of one leg is x miles, then you drove a total of 2x miles in (x/40 + x/50) hours.  Divide the total distance driven by the total time spent driving, and you get 200/9, or 44.444... mph
481154
2 km = 2000m\n2000m = 200000cm
714444
About 175km \n\nabout 2hours 29 minutes
713362
35.8 mi/hr * (1hr/60min) * (1min/60sec) * (5280ft/1mi) * (12in/1ft) * (2.54cm/1in) * (1m/100cm) = your answer\n\nnotice in each fraction... the top is actually equal to the bottom, but in different units... so you can put whichever one you need on the top or bottom, either way it equals 1... so you just manipulate them based on what you start with and what you need.  i started by converted the hour to seconds, then followed by converting the miles to meters.\n\nI don't remember the other conversions, but you should have them in your text cover and just follow the same method.  Hope this helped.