Physics: Momentum and Collisions III

Jun 26th, 2015
Sigchi4life
Category:
Engineering
Price: $5 USD

Question description

A railroad car of mass 2.05 ✕ 104 kg moving at 3.45 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s.

(a) What is the speed of the three coupled cars after the collision?

 (b) How much kinetic energy is lost in the collision? 

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