A cylindrical section of a tree trunk 50 cm in diameter and 75 cm long is seen rolling down a road below a sawmill at a speed of 12 m/s. (Wood has a density of about 750 kg/m^3). Assuming that the road has an incline of 5% (meaning that if you travel 100m along the slope of the road, you go up 5 m), at least how far up the road is the sawmill? Describe any assumptions or approximations that you make.