Hammer on roof Part D | Problem A 0.850 kg hammer is held initially at rest at the peak of a 3.00 meter long inclined roof, as shown below. The roof makes an angle of 22.30 with respect to the horizontal, and the edge of the roof is 4.00 meters above the level ground below. The coefcient of kinetic friction between the roof and the hammer is 0.10. When released, the hammer will slide down the inclined roof. We want to predict d, the horizontal distance from the house to the hammer's impact point on the ground. Use g = 9.80 m/sz. What is the magnitude of acceleration of the hammer the moment it leaves the end of the roof? 2.81 m/52 3.72 m/s2 8.70 m/s2 9.07 m/s2