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? the potential energy in the system is greatest at x. the kinetic energy in the system is greatest at x. total energy in the system decreases as the ball moves from x to y. 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? the potential energy in the system is greatest at x. the kinetic energy in the system is greatest at x. total energy in the system decreases as the ball moves from x to y. 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. At the top of the hill (X), the ball has maximum height in this system, so its potential - energy is greatest. Kinetic energy is related to velocity, and the ball is at rest at X so kinetic energy is zero. According to the law of conservation of energy, the total energy of a closed system remains constant (neglecting non - conservative forces like air resistance). 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.