Get the most out of your questions with IDNLearn.com's extensive resources. Our Q&A platform is designed to provide quick and accurate answers to any questions you may have.

A railroad car with a mass of 1.94 ✕ 104 kg moving at 3.28 m/s joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.02 m/s. what is the velocity after the collision and the total kinetic energy lost?