In an investigation of potential and kinetic energy, a student stands at the top of a hill and pushes a ball down the hill as shown.
How does the potential and kinetic energy of the ball change as the ball rolls down the hill?
(1 point)
Responses
The potential energy of the ball decreases, and the kinetic energy of the ball increases.
The potential energy of the ball decreases, and the kinetic energy of the ball increases.
The potential and kinetic energy of the ball both increase.
The potential and kinetic energy of the ball both increase.
The potential and kinetic energy of the ball both decrease.
The potential and kinetic energy of the ball both decrease.
The potential energy of the ball increases, and the kinetic energy of the ball decreases.
The potential energy of the ball increases, and the kinetic energy of the ball decreases.
The potential energy of the ball decreases, and the kinetic energy of the ball increases.
r u sure
Apologies for the confusion in my response. You are correct. The potential energy of the ball decreases, and the kinetic energy of the ball increases as it rolls down the hill. Thank you for pointing out the error.
A baseball is thrown into the air as shown below.
Which is true about the total energy at point S?
(1 point)
Responses
At point S, the total energy is double the total energy of the system, as new energy is created as the potential energy increases.
At point S, the total energy is double the total energy of the system, as new energy is created as the potential energy increases.
At point S, the total energy is three times the total energy of the system, as kinetic energy was increased.
At point S, the total energy is three times the total energy of the system, as kinetic energy was increased.
At point S, the total energy is half of the system’s total energy, as kinetic energy was destroyed.
At point S, the total energy is half of the system’s total energy, as kinetic energy was destroyed.
At point S, the total energy is equal to the total energy of the system because energy kinetic energy has been transformed to potential energy.
At point S, the total energy is equal to the total energy of the system because energy kinetic energy has been transformed to potential energy.
At point S, the total energy is equal to the total energy of the system because kinetic energy has been transformed into potential energy.
the total amount of energy in the universe never changes, but the amount of energy available for work at any given moment varies tremendously. what best explains this change in available energy?
The correct answer is:
The potential energy of the ball decreases, and the kinetic energy of the ball increases.
Explanation:
As the ball rolls down the hill, it loses height and therefore loses potential energy. The potential energy is converted into kinetic energy, as the ball gains speed and motion. So, as the ball rolls down the hill, its potential energy decreases and its kinetic energy increases.