A red train traveling at 72 km/hr and a green train traveling at 144 km/hr are headed toward one another along a straight level track. When they are 950 meters apart, each enginneer sees the other's train and applies the brakes. The brakes decelerate each train at the rate of 1.0 m/s^2. Is there a colllision? If so, what is the speed of each train at impact? If not, what is the separtion between the trains when they stop??

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anonymous · Answer

Hey these are I think motion problems I need help with theses too

anonymous · Answer

I think you should compute the length of road each train run until they stop. if sum of lengths bigger 950 m, there is a colllision --> compute the speration.  else, call x variable is the length of red( or green) train.  when the collision is hapend, they consume same time and sum of length is 950m. depend on 2 equation above, we can find solution. 
p/s: I hope you understand it! sorry about my enlish.

anonymous · Answer

can you show me? I learn better by looking...