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23 Nov 2019
In the railroad freight yard, an empty freight car of mass m rollsalong a straight level track at 1.0 m/s and collides with aninitially stationary, fully loaded boxcar of mass 4.2m. The twocars 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 after thecollision. With what speed was the loaded boxcar moving before thecollision if the empty one was moving at 1.0 m/s?
m/s
In the railroad freight yard, an empty freight car of mass m rollsalong a straight level track at 1.0 m/s and collides with aninitially stationary, fully loaded boxcar of mass 4.2m. The twocars 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 after thecollision. With what speed was the loaded boxcar moving before thecollision if the empty one was moving at 1.0 m/s?
m/s
