GEOLOGY

Detailed explanation-1: -When the ball suddenly stops, the kinetic energy gets converted into internal energy due to its collision with the wall.

Detailed explanation-2: -In the fraction of a second that the ball collides with the swinging bat, the ball compresses as the energy of the motion goes into deforming the ball and transforms into into elastic potential energy. This potential energy is transformed into kinetic energy as the ball leaves the bat.

Detailed explanation-3: -The forces are the weight, drag, and lift. Lift and drag are actually two components of a single aerodynamic force acting on the ball. Drag acts in a direction opposite to the motion, and lift acts perpendicular to the motion.

Detailed explanation-4: -Since the ball rebounds with the same velocity. Therefore the change in kinetic energy is zero. Hence, the work done by the ball on the wall is zero.