Question

which of the following is an example of potential energy? the airplane flying in the air. the plant sitting on the desk. the person standing up. the car driving on the street. question 2 1 pts at which of the following points does a roller coaster have the most potential energy? at the top of the hill. as it is climbing a hill. at the bottom of the hill. as it is going down a hill. question 3 1 pts at what point on a roller coaster is the kinetic energy increasing? as it is going down the hill. as it is climbing the hill. at the bottom of the hill. at the top of the hill.

Explanation:

• For Question 1: Potential energy is stored energy due to position. A plant sitting on a desk has potential energy because of its position relative to the ground. An airplane flying has both kinetic and potential energy but is more about motion - kinetic energy in a general sense among these options. A person standing up has some small potential energy but not as typical an example as the plant. A car driving has mainly kinetic energy.
• For Question 2: The formula for gravitational potential energy is $U = mgh$ (where $m$ is mass, $g$ is gravitational acceleration, and $h$ is height). At the top of the hill, the roller - coaster has the maximum height among the given options, so it has the most potential energy.
• For Question 3: Kinetic energy $K=\frac{1}{2}mv^{2}$ (where $m$ is mass and $v$ is velocity). As the roller - coaster goes down the hill, its height decreases and speed increases due to the conversion of potential energy to kinetic energy, so its kinetic energy is increasing.

Answer:

Question 1: The plant sitting on the desk
Question 2: At the top of the hill
Question 3: As it is going down the hill