An "easy" 10 points for the first correct answer! Be careful!
2006-09-05 18:08:56 · 19 answers · asked by gauger_1 3 in Science & Mathematics ➔ Mathematics
Infinite velocity because you've already used all your time going the first mile.
2006-09-05 18:10:48 · answer #1 · answered by Anonymous · 0⤊ 2⤋
average speed = distance / time
average speed given is 60mph
distance given is 2 miles
60 = 2 / time
time = 2 / 60 = 1/30
so you want your total time to be 1/30 of an hour or 2 minutes.
At 30 mph, it takes 1/30 of an hour or 2 mintues to travel the first mile.
You've already used up all your time to travel the first mile.
You'd have to instantly teleport through the 2nd mile to have a 60mph average speed. There is no way to get a 60mph average speed.
2006-09-05 18:39:14 · answer #2 · answered by Demiurge42 7 · 1⤊ 0⤋
To average 60 mph, the vehicle must move the two miles every two minutes. At 30 miles an hour, it has already used the first two 2 minutes, and cannot achieve an average of 60 mph over the first 2 miles.
2006-09-05 18:17:38 · answer #3 · answered by Jim T 6 · 1⤊ 0⤋
The vehicle can not, because it would take 1/30th of an hour to complete the first mile at 30mph and since it takes 1/30th of an hour to complete 2 miles at 60mph (2/60), it is not possible.
2006-09-05 18:21:42 · answer #4 · answered by phosphoricx3 2 · 1⤊ 0⤋
Trick question - the 2nd mile would average 60 mile and hour if you went 60 miles an hour for the 2nd.
Whole trip average to 60mph - would be 90 mph for 2nd mile.
Good question
2006-09-05 18:11:03 · answer #5 · answered by Chloe 6 · 0⤊ 0⤋
let t1 be the time it takes to travel the 1st mile
t1 = 1/30
let t2 be the time it takes to travel the 2nd mile and s be the speed
t2 = 1/s
average speed = 60 = 2miles/(t1+t2) = 2/(1/30 + 1/s)
1/30 + 1/s = 1/30
1/s = 0
s -> infinity
To travel 60 mph average, you must travel cover 2 miles within 1/30 hr. But, you have already used up the 1/30hr traveling the 1st mile. Therefore, it is impossible.
2006-09-05 18:21:19 · answer #6 · answered by Anonymous · 1⤊ 0⤋
If the second mile must average 60MPH, then obviously the vehicle must travel 60MPH during the second mile.
If both miles are to average 60MPH, it's impossible to achieve this since the first mile took 2 minutes to travel (at 30MPH). Therefore, the answer is infinity--
2006-09-05 18:13:31 · answer #7 · answered by surfinthedesert 5 · 1⤊ 1⤋
60 mph. the question doesn't indicate if the "average" is of the two miles together. the wording indicates that the first average is only for the first mile, but the average for the 2nd mile doesn't necessarily include the first.
2006-09-05 18:15:51 · answer #8 · answered by Anonymous · 1⤊ 0⤋
it would have to do it in no time, literally 00.0000 seconds. Its impossible. to average 60mph for two miles you would have to complete the two miles in two minutes. The first mile already took the two minutes.
2006-09-05 18:22:42 · answer #9 · answered by ice_purple969 4 · 1⤊ 0⤋
Same speed as the first mile..30mph
2006-09-05 18:16:19 · answer #10 · answered by gonicki31 3 · 0⤊ 0⤋
using the belief of relativity the prepare will would desire to shuttle on the cost of light on the 2d a million/2 of the adventure to be able to familiar 60 mph because it is going to take 2 hours to do the 1st leg and could do the 2d leg very right away in any respect. the only thank you to do it is to shuttle at easy velocity.
2016-12-12 03:24:55 · answer #11 · answered by lacy 4 · 0⤊ 0⤋