Acriminal is escaping across a rooftop and runs off the roof horizontally at a speed of 6.8 m/s, hoping to land on the roof of an adjacent building. air resistance is negligible. the horizontal distance between the two buildings is d, and the roof of the adjacent building is 1.1 m below the jumping-off point. find the maximum value for d. (g = 9.80 m/s2)

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.