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A child whose weight is 325 N slides down a 9.2 m playground slide that makes...

A child whose weight is 325 N slides down a 9.2 m playground slide that makes an angle of 30° with the horizontal. The coefficient of kinetic friction between slide and child is 0.20. If she starts at the top with a speed of 0.55 m/s, what is her speed at the bottom?

A.11 m/s

B.33 m/s

C.22 m/s

D.9 m/s

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