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a 2000kg car travelling west with a speed of 20m/s collides at an intersection with a 3000kg car travelling south at a speed of 20m/s. find the direction and magnitude of the velocity of the wreckage after the collision, assuming the collision was perfect...

a car pulling two trailers accelerates from 10m/s to 12m/s in 10s. if the masses of the car and the trailers are respectively 2000kg, 500kg and 300kg.calculate the tension in the tow bar a)between the car and 500kg trailor b)between the 500kg and 300kg tr...