kimkibun
I hope you help me with this set of problems:

1.) a bus travels 400m between two stops. it starts from rest and accelerates at 1.5m/sqr.sec until it reaches a speed of 9m/s. the bus continues at this speed until it decelerates at 2m/sqr.sec until it comes to a halt. find the total time required for the journey.

2.) a passenger train starts from a station just a freight train on a parallel track passes in the same direction with the velocity of 15m/s. the passenger train has an acceleration of 80cm/sqr.sec. in how many seconds and how far from it after the passenger train has started will they be side by side?

3.) two trains, one traveling at 20m/s, and other at 40m/s, are headed toward one another along a straight level track. when they are 950m apart each engineer sees the other's train and applies the brakes. the brakes decelerates each train a a constant rate of 10m/sqr.sec. will the two trains collide? explain quantitatively.

i need a complete solution. thanks and GB!
Robittybob1
QUOTE (kimkibun+Apr 9 2012, 10:40 AM)
I hope you help me with this set of problems:
...
i need a complete solution. thanks and GB!

I think you need to show you have tried to do it yourself.
PhysOrg scientific forums are totally dedicated to science, physics, and technology. Besides topical forums such as nanotechnology, quantum physics, silicon and III-V technology, applied physics, materials, space and others, you can also join our news and publications discussions. We also provide an off-topic forum category. If you need specific help on a scientific problem or have a question related to physics or technology, visit the PhysOrg Forums. Here you’ll find experts from various fields online every day.