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15. A 12 kg crate is pushed up an incline from
point A to point B as shown in the figure: B 7.5
m 2.5 m The height of the points A and B from
the ground are given in the figure. What is the
change in the gravitational potential energy of
the crate? A. 590J B. -590] C. 950] D. -950 J

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