if we have 75, four-hundred pound men, running at 35 miles per hour, and one of these men accidently drops his frankfurter, slowing the speed of the group to 20 miles per hour for 1 minute,
what is the average speed of these men over a 10 mile course???
2006-11-19 09:26:11 · 2 answers · asked by bigschwinger 2 in Science & Mathematics ➔ Mathematics
They ran for 20 mph for 1 minute. In this time, they covered 1/3 of a mile. This means that for the other 9 2/3 miles, they ran at 35 mph.
This means their time for that part was 29/105 hours. Add in the 1 minute to get 29/105 + 1/60 to get 41/140 hours as their time. We take 10 divided by this to get their average speed, which is 1400/41 mph, which is approximately 34.14634146 mph.
2006-11-19 09:48:23 · answer #1 · answered by Texas Cowgirl 3 · 0⤊ 0⤋
i dont know get a calculator
2006-11-19 23:42:36 · answer #2 · answered by jesse 2 · 0⤊ 0⤋