Object a has of mass 7.20 kilograms, and object b has a mass of 5.75 kilograms. the two objects move along a straight line toward each other with velocities +2.00 meters/second and -1.30 meters/second respectively. what is the total kinetic energy of the objects after the collision, if the collision is perfectly elastic?
19.3 joules
21.9 joules
38.5 joules
43.0 joules
50.8 joules
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Object a has of mass 7.20 kilograms, and object b has a mass of 5.75 kilograms. the two objects move...
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