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A 0.49-kg particle has a speed of 3.0 m/s at point A and kinetic energy of...

A 0.49-kg particle has a speed of 3.0 m/s at point A and kinetic energy of 7.7 J at point B. (a) What is its kinetic energy at A? J (b) What is its speed at point B? m/s (c) What is the total work done on the particle as it moves from A to B? J

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cl 2- x(3 ) に2.201 J 2

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