The tires of a bus have an outside diameter of 80 centimeters and are rotating at 500 revolutions per minute! How fast is the f\bus moving in meters per hour?
2006-09-17 16:45:18 · 13 answers · asked by Amy 1 in Science & Mathematics ➔ Mathematics
75.36 kilometers.
Solution: 80 cm X 3.14 or P
now convert it to meters by dividing the answer to 100.
then the answer you get you multiply by 500, that's the answers for 1 minutes. now to get the answer in hours you multiply it by 60.
If you want the answers in Meters then leave it, if you don't Divid it by 1000.
2006-09-17 16:51:42 · answer #1 · answered by frontstreetboy2004 3 · 0⤊ 0⤋
So, it's doing 80 X 500 cm per minute
that's 40, 000 cm or 400 m
400 X 60 to get a hour's worth is
24,000 meters or 24 km per hour
2006-09-17 23:50:56 · answer #2 · answered by Bart S 7 · 0⤊ 0⤋
1 revolution = 80 centimenters
and, 60 minutes = 1 hour, and 100 centimeters = 1 meter
500 revolutions/1 minute * (60 minutes/1 hour)*(80 cm/ rev)(1 meter / 100 cm)=whatever you get from that..
2006-09-17 23:50:31 · answer #3 · answered by ThisGalRocks! 3 · 0⤊ 0⤋
perimeter=2 pi r
=160pi
in 1 minute it takes 160pi 500=80000pi
in 60 minutes (1 hour) it takes 60* 80000pi
=4 800 000 pi
=48000pi meters per hour
if pi=3 then
velocity= 144000 m/h
2006-09-17 23:53:43 · answer #4 · answered by iyiogrenci 6 · 0⤊ 0⤋
.8 meters times 500 revolutions times 60 minutes in an hour.
it's 24,000 m/hr.
2006-09-17 23:47:54 · answer #5 · answered by SST 6 · 0⤊ 0⤋
ok i wont do it all for you but you take the fomula for cicumfrence of a circle x 80 x 500 for the rovelutions per minute x 60 minutes in an hour = cm/hr cetimeters per hour
2006-09-17 23:57:03 · answer #6 · answered by bishop 1 · 0⤊ 0⤋
You have a choice. Either believe one of these dingbats, or put the time to good use by turning off your goddam computer, opening your book and learning something. That way, you will know when you walk into class that you have the right answer instead of worrying about it untill you finally learn that the idiot you have never seen but decided to trust got the wrong answer for you.
2006-09-17 23:52:51 · answer #7 · answered by Anonymous · 0⤊ 0⤋
d = 80 cm
One revolution bring the full circumference around. Therefore the revolutions per minute times the circumference equals the speed in cm/min.
C= Ïd = 80Ï cm/rev
Convert C to meters
C = 80Ï cm/rev (0.01 m/cm) = 0.8Ï m/rev
500 rev/min (60 min / hr) = 30,000 rev/hr
v = (0.8Ï m/rev)(30,000 rev/hr)
= 24,000Ï m/hr
â 75,400 m/hr
â 75.4 kph
2006-09-18 00:05:20 · answer #8 · answered by novangelis 7 · 0⤊ 0⤋
500 RPM x 80 cm = 40,000 cm/min (400 m)
400 m/min x 60 min/hr = 24,000 m/hr (24 km/hr)
2006-09-17 23:48:00 · answer #9 · answered by Iaean 3 · 0⤊ 0⤋
30 meters per hour......
2006-09-17 23:53:50 · answer #10 · answered by laksh 3 · 0⤊ 0⤋