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# A numerical from Projectile motion, friction and more

One side of the roof of a building slopes up at 33.5°. A roofer kicks a round, flat rock that has been thrown onto the roof by a neighborhood child. The rock slides straight up the incline with an initial speed of 15.0 m/s. The coefficient of kinetic friction between the rock and the roof is 0.430. The rock slides 10.0 m up the roof to its peak. It crosses the ridge and goes into free fall, following a parabolic trajectory above the far side of the roof, with negligible air resistance. Determine the maximum height the rock reaches above the point where it was kicked.

(The question is left for visitors to answer.)

1. bk1992g says:

the rock reaches the peak and the answer is the peak itself i.e 10m__i think………

2. binesh says:

the rock reaches the peak and the answer is the peak itself i.e 10m
i think………

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