Posted by **Laura** on Wednesday, August 17, 2011 at 9:27pm.

Two trains face each other on adjacent tracks. They are initially at rest, and their front ends are 50 m apart. The train on the left accelerates rightward at 1.05 m/s2. The train on the right accelerates leftward at 0.93 m/s2.

(a) How far does the train on the left travel before the front ends of the trains pass?

(b) If the trains are each 150 m in length, how long after the start are they completely past one another, assuming their accelerations are constant?

- physics -
**bobpursley**, Wednesday, August 17, 2011 at 9:48pm
The distance covered is 50 m, so let the rightmost train go x meters, the left goes 50-x m in the same time...

x=1/2 aright*time^2

50-x=1/2 aleft*time^2

divide the equations

x/(50-x)=aright/aleft

solve for x (right), and 50-x (left)

b. now, the distance apart the ends starts at 350m.

one goes y, the other 350-y

solve it again, only this part find the time.

## Answer this Question

## Related Questions

- physics - Two trains face each other on adjacent tracks. They are initially at ...
- physics - Two trains face each other on adjacent tracks. They are initially at ...
- physicsURGENT!!!!!! - Two trains face each other on adjacent tracks. They are ...
- Physics - Two trains face each other on adjacent tracks. They are initially at ...
- physicsHELP!!! - Two trains face each other on adjacent tracks. They are ...
- Physics AP C - Two trains, each having a speed of 22 km/h, are headed at each ...
- math - A northbound train and a southbound train meet each other on parallel ...
- Math - An eastbound train and a westbound train meet each other on parallel ...
- MATHHH!!!! PLEASE HELP - An eastbound train and a westbound train meet each ...
- Math - Train A and train B leave station going in opposite directions. Train B ...

More Related Questions