water is forced through a hydraulic system by a pump. an air chamber is used to maintain a continuous flow of water during upstroke and downstroke of the piston pump . explain how the continuous flow of water is maintained​

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.