Question
Alana summarized what happens when a ball sitting on top of a grassy hill rolls down the hill.
The motionless ball has potential energy. Once the ball starts to roll down the hill, new kinetic energy is made. As the ball rolls across the grass, it slows down. The kinetic energy of the ball is converted to other forms of energy.
Which best describes Alana’s error?
The motionless ball does not have energy because it is still.
Kinetic energy is not made; it is a result of energy transformation.
The ball cannot slow down unless someone touches it.
The energy is not converted; it disappears.
The motionless ball has potential energy. Once the ball starts to roll down the hill, new kinetic energy is made. As the ball rolls across the grass, it slows down. The kinetic energy of the ball is converted to other forms of energy.
Which best describes Alana’s error?
The motionless ball does not have energy because it is still.
Kinetic energy is not made; it is a result of energy transformation.
The ball cannot slow down unless someone touches it.
The energy is not converted; it disappears.
Answers
GPT-4o mini
The best description of Alana's error is:
**Kinetic energy is not made; it is a result of energy transformation.**
Alana correctly states that the ball has potential energy when still on the hill, and when it starts to roll down, that potential energy is converted into kinetic energy. The kinetic energy isn't "made" in a new sense; it results from the transformation of potential energy as the ball moves.
**Kinetic energy is not made; it is a result of energy transformation.**
Alana correctly states that the ball has potential energy when still on the hill, and when it starts to roll down, that potential energy is converted into kinetic energy. The kinetic energy isn't "made" in a new sense; it results from the transformation of potential energy as the ball moves.