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?
(1 point)
Responses
Kinetic and potential energy are increasing.
Kinetic energy is increasing, and potential energy is decreasing.
Kinetic and potential energy are decreasing.
Potential energy is increasing, and kinetic energy is decreasing.
The correct statement is: Kinetic energy is increasing, and potential energy is decreasing.
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
at the top of the ramp before they begin moving down into the ramp
on the first part of the ramp as the person is moving down the side
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
The person has the greatest potential energy at the top of the ramp before they begin moving down into the ramp.
As the bicyclist rides from right to left, at which of the three points, if any, is the bicyclist’s potential energy increasing?
A going down the hill
B on the highest point of the hill
C going up the hill
(1 point)
Responses
The potential energy is always decreasing because the bicyclist continues to move forward.
The potential energy is increasing at point B because the bicyclist is highest there.
The potential energy is increasing at point A because the bicyclist is moving fastest 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 C because the bicyclist is increasing in elevation at that point.
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 bottom
at the top
a quarter of the way down
half way down