You throw a ball straight up with an initial velocity of 25 m/s. what is the maximum height reached by the ball? how long is the ball in the air? How fast will the ball be going when it returns to your hand

Two objects, =15.3 kg and =5.31 kg are connected with an ideal string and suspended by a pulley (which rotates with no friction) in the shape of a uniform disk with radius =7.5 cm and mass =14.1 kg. the string causes the pulley to rotate without slipping. if the masses are started from rest and allowed to move 2.5 m: