Kayla C.

asked • 09/23/20

KinDin (roof question )

Two roofers are installing a new roof. Bob is sitting on the top of the roof that is angled at 23.4 degrees from the horizontal. Nate is sitting 3.8 m further down the roof. In order to get a box of shingles to Nate, Bob just slides the box directly down to him. If the coefficient of kinetic friction for the box and roof is 0.7, then with what speed should Bob initially push the box so that it slides to a stop right as it reaches the Nate?



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