- #1

Rebecca Berger

- 7

- 0

## Homework Statement

Two trains approach each other on a straight level track: one from the east and the other from the west. Initially they are 7,500 meters apart and have a spray of 10meters/s with respect to the ground. If both locomotives accelerate toward the east at a constant rate of .025 meters/s^2, in how many minutes will they collide?

## Homework Equations

X=X0+V0t+1/2at^2

V=V0+at

V^2=V0^2+2a(X-X0)

## The Attempt at a Solution

For our class we're only allowed to use these equations. At dust I thought it would be simple to just find X but I forgot we weren't given final velocity. I'm missing v,x, and t. I tried plugging the numbers into the last equation to find X, but I just got v=10m/s +2(.025m/s)(X-0) or for the other train v=10m/s +2(.025m/s)(X-7500) I always end up with two missing parts. I might be over looking something, or have been spending too much time on homework and just need to sleep it out. Please let me know if I'm missing something! Thank you so much.