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26 Nov 2019
In the railroad freight yard, an empty freight car ofmassm rolls along a straight level track at 1.1 m/s andcollides with an initially stationary,fully loaded boxcar of mass3.9m.The two cars couple together upon collision. (a) What is the speed of the two cars after the collision?___m/s
(b) Suppose instead that the two cars are at rest afterthecollision. With what speed was the loaded boxcar moving beforethecollision if the empty one was moving at 1.1 m/s?___m/s
In the railroad freight yard, an empty freight car ofmassm rolls along a straight level track at 1.1 m/s andcollides with an initially stationary,fully loaded boxcar of mass3.9m.The two cars couple together upon collision.
(a) What is the speed of the two cars after the collision?___m/s
(b) Suppose instead that the two cars are at rest afterthecollision. With what speed was the loaded boxcar moving beforethecollision if the empty one was moving at 1.1 m/s?___m/s
(b) Suppose instead that the two cars are at rest afterthecollision. With what speed was the loaded boxcar moving beforethecollision if the empty one was moving at 1.1 m/s?___m/s
Trinidad TremblayLv2
14 Jan 2019
