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April 18, 2014

Homework Help: physics

Posted by ami on Thursday, September 2, 2010 at 3:20pm.

An engineer of a passenger train traveling at 25.0 m/s sights a freight train whose caboose is 200m ahead on the same track. The freight train is traveling at 15.0 m/s in the same direction as the passenger train. The engineer of the passenger train immediately applies the brakes, causing a constant accelaration of -0.100 m/s2, while the freight train continues with constant speed. Take x=0 at the location of the front of the passenger train when the engineer applies the brake.

(a) will the cows nearby witness a collision?

(b) if so, where it take place?

(c) on a single graph, sketch the positions of the frong of the passenger train and the back of the freight train.

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