Posted by Dan on Tuesday, November 30, 2010 at 2:20pm.
The Cedar Bluff express KAT bus averages 15 mph for 20 minutes, and then 32 mph for 14 minutes. What was its average speed? (mph)

physics  Henry, Thursday, December 2, 2010 at 12:37am
d = V1*t1 + V2*t21,
d = 15 mi/h*(20/60)h + 32mi/h*(14/60)h,
d = 5 + 7.5 = 12.5 Miles.
t=20 min. + 14 min = 34 min = 0.567 h.
V(ave) = d / t = 12.5 / 0.567 = 22.1 mi/h.

physics  Dan, Thursday, December 2, 2010 at 9:32am
thanks, I see where I messed up at...
Answer This Question
Related Questions
 physics  The Cedar Bluff express KAT bus averages 5 mph for 17 minutes, and ...
 Math  can you help i dnt know what to do so could you tell me how to solve it 1...
 Physic Help  In heavy rushhour traffic in Atlanta, you drive in a straight ...
 science  A bus makes a 10 mph journey through town . its top speed is 30 mph ...
 physics  a car travels 40 miles at an average speed of 80 mph and then travels ...
 physics  a man drives with an average speed of 25 mph for 20 minutes. he rests ...
 Physics  The chemical potential energy of a certain amount of gasoline is ...
 Physics  The chemical potential energy of a certain amount of gasoline is ...
 Physics  On a drive from your home to town, you wish to average 52 mph. The ...
 Physics  On a drive from your home to town, you wish to average 44 mph. The ...
More Related Questions