The girl in the picture is at the highest point in swinging and starts to come down. Which statement best describes the changes in energy as she begins to descend?

Question

(1 point)
Responses

Kinetic and potential energy are decreasing.
Kinetic and potential energy are decreasing.

Kinetic and potential energy are increasing.
Kinetic and potential energy are increasing.

Potential energy is increasing, and kinetic energy is decreasing.
Potential energy is increasing, and kinetic energy is decreasing.

Kinetic energy is increasing, and potential energy is decreasing.
Kinetic energy is increasing, and potential energy is decreasing.
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Answer 1

The correct statement is:

Kinetic energy is increasing, and potential energy is decreasing.

As the girl swings down from the highest point, her potential energy (due to her height) decreases while her kinetic energy (related to her speed) increases as she accelerates downward.

Answer 2

Question
A person is riding a skateboard on a U-shaped ramp. At which point does the person have the greatest potential energy?(1 point)
Responses

in the middle of the ramp at its lowest point in the U
in the middle of the ramp at its lowest point in the U

on the other side of the ramp as the person is coming back up
on the other side of the ramp as the person is coming back up

on the first part of the ramp as the person is moving down the side
on the first part of the ramp as the person is moving down the side

at the top of the ramp before they begin moving down into the ramp

Answer 3

The correct response is:

at the top of the ramp before they begin moving down into the ramp.

This is because potential energy is highest at the highest point of the ramp due to the person's elevated position. As they descend, potential energy is converted into kinetic energy.

Answer 4

As the bicyclist rides from right to left, at which of the three points, if any, is the bicyclist’s potential energy increasing?

(1 point)
Responses

The potential energy is increasing at point A because the bicyclist is moving fastest at that point.
The potential energy is increasing at point A because the bicyclist is moving fastest at that point.

The potential energy is always decreasing because the bicyclist continues to move forward.
The potential energy is always decreasing because the bicyclist continues to move forward.

The potential energy is increasing at point C because the bicyclist is increasing in elevation at that point.
The potential energy is increasing at point C because the bicyclist is increasing in elevation at that point.

The potential energy is increasing at point B because the bicyclist is highest there.
The potential energy is increasing at point B because the bicyclist is highest there.

Answer 5

The correct response is:

The potential energy is increasing at point C because the bicyclist is increasing in elevation at that point.

Potential energy increases when an object gains height, so if the bicyclist is ascending at point C, their potential energy would be increasing there.

Answer 6

If a monkey drops a banana off of a cliff, where are the potential and kinetic energies of the banana equal?(1 point)
Responses

at the top
at the top

at the bottom
at the bottom

halfway down
halfway down

a quarter of the way down

Answer 7

The correct response is:

halfway down.

At the halfway point between the top of the cliff and the bottom, the banana has converted half of its initial potential energy into kinetic energy. Therefore, at that point, the potential energy and kinetic energy are equal.