4. (6 pt) Given the following collision and data, answer the following with the correct units: Blue Red Mass = 150 Kg Mass = 100 Kg V. = 20 m/s to the right V = 0m/s = 2 m/s to the right V= 4 m/s to the right a. Calculate the initial momentum of the Red and Blue cars. b. Calculate the initial kinetic energy of the red and blue cars c. Calculate the final kinetic energy of the cars. Was any energy lost? d. This collision was inelastic / elastic (circle one )