Posted by **Chloe** on Monday, January 12, 2009 at 10:47pm.

A train travels 84 km/h when it reaches a slower train 47 meters ahead traveling the same direction at 24 km/h. If the faster train decelerates at 2.1 m/s^2 while the slower train is at a constant speed, when will they collide? If the train that is faster begins to decelerate at 2.1 m/s^2 while the slower train continues at a constant speed, what will be the relative speed in which they will collide?

I got 8.5 seconds for the first one and 3.68 seconds for the last one. Thanks Y'all.

## Answer this Question

## Related Questions

- Physics - A train travels 84 km/h when it reaches a slower train 47 meters ahead...
- Physics - A train travels 84 km/h when it reaches a slower train 47 meters ahead...
- Hard Physics - A bullet train is traveling at 23.3 m/s when it approaches a ...
- Physics - A bullet train is traveling at 23.3 m/s when it approaches a slower ...
- Physics - You're an investigator for the National Transportation Safety Board, ...
- Physics - You're an investigator for the National Transportation Safety Board, ...
- Math - A train going 60 mph left several minutes before the 63mph train. ...
- physics - A red train traveling at 72 km/h and a green train traveling at 144 ...
- Math - Train A and train B leave station going in opposite directions. Train B ...
- math - Train A is 12 mph slower than train B. Train A travels 230 miles in the ...

More Related Questions