Correct option is B
When a ball moves through air, it experiences air resistance, which is a non-conservative force that dissipates mechanical energy as heat to the surroundings. According to the first law of thermodynamics, the total energy change in a system equals the energy transferred as heat or work. In this case, energy is lost from the ball’s kinetic energy due to work done against air resistance and is transferred as heat to the surrounding air. As a result, the ball slows down, meaning its final velocity decreases, and simultaneously, its kinetic energy also decreases because kinetic energy depends directly on the square of velocity. Therefore, both the kinetic energy and the final velocity of the ball decrease in the presence of air resistance.
