A 2285 kg freight train, coasting at 13 m/s, strikes a stationary 2465 kg box car. Determine the "CHANGE IN VELOCITY" for the freight train if the freight train and the box car couple together. Hint: Draw an "IF Chart" to solve.
momentum is conserved
2285 * 13 = (2285 + 2465) * v
13 - v = ?