Physics, 12.12.2019 06:31 lesliesaucy4987
Arailroad car of mass m moving at a speed v1 collides and couples with two coupled railroad cars, each of the same mass m and moving in the same direction at a speed v2.
(a) what is the speed vf of the three coupled cars after the collision in terms of v1 and v2? vf =
(b) how much kinetic energy is lost in the collision? answer in terms of m, v1, and v2. ? ke =
Answers: 3
and other two's with 
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Arailroad car of mass m moving at a speed v1 collides and couples with two coupled railroad cars, ea...
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