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A box with an initial speed of 15 m/s slides along a surface where the coefficient...

A box with an initial speed of 15 m/s slides along a surface where the coefficient of sliding friction is 0.45. How long does it take for the block to come to rest?

(a)   1.5 s
(b)   3.4 s
(c)   6.8 s
(d)   8.5 s
(e)   4.7 s

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