From experimental tests, smaller boulders tend to have a greater coefficient of restitution than larger boulders. The rock A falls a distance of 20 meters before striking an incline with slope α = 45°. Knowing that h= 30 m and d= 20 m, determine if a boulder will land on the road or beyond the road for a coefficient of restitution of (a) e = 0.2, (b) e = 0.1.