What is decrease in kinetic energy throughout the collision

Reference no: EM1359849

Q. A railroad car with mass of 20000 kg moving at 3 m/s collides and joins with two railroad cars already joined together, each with same mass as the single car and initially moving in the same direction at 1.20 m/s.

a) what is the speed of the three joined car after the collision?

b)What is decrease in kinetic energy during the collision?

Reference no: EM1359849

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