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Physics, 20.11.2019 21:31 eboniwiley

Acar of mass m moving at a speed v1 collides and couples with the back of a truck of mass 3m moving initially in the same direction as the car at a lower speed v2. (use any variable or symbol stated above as necessary.) (a) what is the speed vf of the two vehicles immediately after the collision? vf = (b) what is the change in kinetic energy of the car❝truck system in the collision? ? k =

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