the diagram shows a ball resting at the top of a hill. which statement best describes the energy in this…

the diagram shows a ball resting at the top of a hill. which statement best describes the energy in this system? o the potential energy in the system is greatest at x. o the kinetic energy in the system is greatest at x. o total energy in the system decreases as the ball moves from x to y. o total energy in the system increases as the ball moves from x to y.

the diagram shows a ball resting at the top of a hill. which statement best describes the energy in this system? o the potential energy in the system is greatest at x. o the kinetic energy in the system is greatest at x. o total energy in the system decreases as the ball moves from x to y. o total energy in the system increases as the ball moves from x to y.

Answer

Brief Explanations:

Potential energy is related to height and mass ($PE = mgh$). At the top of the hill (point X), the ball has maximum height in this scenario. Kinetic energy is related to speed ($KE=\frac{1}{2}mv^{2}$), and the ball is at rest at X so kinetic - energy is zero. According to the law of conservation of energy, the total mechanical energy (sum of potential and kinetic energy) of a closed system remains constant in the absence of non - conservative forces (like friction). As the ball moves from X to Y, potential energy is converted to kinetic energy, but total energy remains the same.

Answer:

The potential energy in the system is greatest at X.