Two trains, A and B, leave their respective starting points at the same time and travel in opposite directions. They travel at constant speeds, and pass at point M. One travels at twice the speed of the other. If one of the trains leaves five minutes late and they pass at a point 2 miles from point M, what color was train A?
2006-07-03 11:26:30 · 23 answers · asked by Rayb 1 in Science & Mathematics ➔ Other - Science
Bugsquash Brown -The train is doing 120mph average
From the other train with a closing speed of180 mph -its blurry bugsquash brown .
From the observer at Point M - its 2 miles away so it is Faraway Bugsquash brown ie Nearly Invisible -If the train is 5 minutes late - its definitely one of our local ones -Bugsquash + Graffitti over Stainless Steel
2006-07-14 11:48:43 · answer #1 · answered by alvinmaker51 1 · 1⤊ 1⤋
Using the data provided it is quite easy to work out the fact that train A is dark blue
o0o Train B is red with silver flash lines(just as a point of interest)
2006-07-03 11:37:30 · answer #2 · answered by teaghee 2 · 0⤊ 0⤋
It depends upon where you are standing. The train you are standing behind should be red-shifted from its original color, the other should be blue-shifted the faster moving train should be color-shifted by twice the slower moving train.
2006-07-12 19:35:56 · answer #3 · answered by sleeplessinslo 2 · 0⤊ 0⤋
distance = cost x time or time = distance / cost right here the speed is the sum of both trains, on condition that they are getting in opposite instructions, that's their relative %. time = 285 miles / (50 mph + sixty 4 mph) = 2.5 hours
2016-10-14 02:23:32 · answer #4 · answered by alim 4 · 0⤊ 0⤋
Train A was fire engine red with yellow go-fast stripes along the sides!
2006-07-03 11:34:52 · answer #5 · answered by socjfk 2 · 0⤊ 0⤋
I think these people who answered the train is red are wrong. Everyone knows trains can't read, but newspapers are red.
2006-07-03 11:46:08 · answer #6 · answered by Anonymous · 0⤊ 0⤋
d@mmit, you can't possibly tell the color of train A by that data alone stoopid.
train B, on the other hand, is obviously turquiose.
2006-07-11 23:50:30 · answer #7 · answered by hapones120 2 · 0⤊ 0⤋
Train A is periwinkle. tRayn-B is the pride color of the Rainbow!
2006-07-14 07:21:37 · answer #8 · answered by hungk7 2 · 0⤊ 0⤋
Lime Green.
2006-07-03 11:29:55 · answer #9 · answered by Anonymous · 0⤊ 0⤋
The color of LIGHT?
2006-07-13 06:52:48 · answer #10 · answered by thewordofgodisjesus 5 · 0⤊ 0⤋