Question

A ball begins rolling down a hill from point A. It rolls to the bottom of the hill at point D. and continues rolling up the hill to point G.
Which statement BEST explains the relationship between kinetic and potential energy of the ball?
А
The kinetic energy of the ball decreases as the ball rolls down the hill to point D, while potential energy incrosses from point A to point D. As the ball rolls back up the hill to
point potential energy decreases while kinetic energy increases
B
The kinetic energy of the ball decreases as the ball rolls down the hill to point D, while potential energy increases from point A to point D. As the ball rolls back up the hill to
point, kinetic energy decreases while potential energy increases
С
The potential energy of the ball decreases as the ball rolls down the hill to point D, while kinetic energy increases from point A to point D. As the ball rolls back up the hill to
point , potential energy increases while kinetic energy decreases
back up the hill to
D
The potential energy of the ball decreases as the ball rolls down the hill to point D, while the kinetic energy increases from point A to point D. As the ball
A
point, potential energy decreases while Kinetic energy increases

Answer 1

The potential energy of the ball decreases as the ball rolls down the hill to point D, while kinetic energy increases from point A to point D. As the ball rolls back up the hill to point G, potential energy increases while kinetic energy decreases back up the hill to G.

According to the principle of conservation of mechanical energy, the potential energy of an object at the highest position is converted to kinetic energy at the lowest point.

As the ball moves downwards, its velocity increases and kinetic energy increases as well but the potential energy will decrease because the height of the ball decreases.

Thus, we can conclude that the relationship between kinetic and potential energy of the ball is best explained by option C.

" The potential energy of the ball decreases as the ball rolls down the hill to point D, while kinetic energy increases from point A to point D. As the ball rolls back up the hill to point G, potential energy increases while kinetic energy decreases back up the hill to G".

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