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Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1450 kg and was approaching at 6.00 m/s due south. The second car has a mass of 900 kg and was approaching at 20.0 m/s due west.
(a) Calculate the final velocity (magnitude in m/s and direction in degrees counterclockwise from the west) of the cars. (Note that since both cars have an initial velocity, you cannot use the equation conservation of momentum along the x-axis and y-axis; instead, you must look for other simplifying aspects.)
(b) How much kinetic energy (in J) is lost in the collision?

Sagot :

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