At the same instant that a 0.50-kg ball is dropped from 25 m above earth, a second ball, with a. mass of 0.25 kg, is thrown straight upward from earth’s surface with an initial speed of 15 m/s.. they move along nearby lines and pass each other without colliding. at the end of 2.0 s the. height above earth’s surface of the center of mass of the two-ball system is ?
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At the same instant that a 0.50-kg ball is dropped from 25 m above earth, a second ball, with a. mas...
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