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A boy weighing 250 N slides down upto th...

A boy weighing 250 N slides down upto the ground from the top of a slide. The friction offered by the slide is three tenth of his weight. The length and height of the slide is 10 m and 8 m, respectively. The work done by the slide on the boy as he comes down to the ground is

A

−1250 J

B

2000 J

C

−750 J

D

750 J

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