Mrs. Smith is teaching a science class. She holds a pendulum and pulls the ball at the end of the pendulum to position A. Then she lets it swing to position G.

Question

The picture below shows the starting position A, the ending position G, and several positions in between the start and the end. The arrow shows the direction of motion.

Think about the motion of the pendulum as you answer the questions.



Question 1
a. At position A, describe the energy of the pendulum ball.(1 point)
Responses

Kinetic energy and potential energy are both at their lowest values.
Kinetic energy and potential energy are both at their lowest values.

Kinetic energy is at its highest value, while potential energy is at its lowest value.
Kinetic energy is at its highest value, while potential energy is at its lowest value.

Potential energy and kinetic energy are both at their highest values.
Potential energy and kinetic energy are both at their highest values.

Potential energy is at its highest value, while kinetic energy is at its lowest value.
Potential energy is at its highest value, while kinetic energy is at its lowest value.
Question 2

b. Drag the terms (listed below the paragraph) into the blanks in order to correctly complete the paragraph.

You will use the terms more than one time each.

(2 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
At positions B and C, Response area is decreasing and Response area is increasing.

At positions E and F, Response area is decreasing and Response area is increasing.

Question 3

c. At position D, describe the energy of the pendulum ball.

(1 point)
Responses

Potential energy and kinetic energy are both at their highest values.
Potential energy and kinetic energy are both at their highest values.

Potential energy is at its highest value, while kinetic energy is at its lowest value.
Potential energy is at its highest value, while kinetic energy is at its lowest value.

Kinetic energy and potential energy are both at their lowest values.
Kinetic energy and potential energy are both at their lowest values.

Kinetic energy is at its highest value, while potential energy is at its lowest value.
Kinetic energy is at its highest value, while potential energy is at its lowest value.
Question 4

d. Describe the speed of the pendulum ball at position D.

(1 point)
Responses

The speed is at its highest value.
The speed is at its highest value.

The speed is at its lowest value.
The speed is at its lowest value.

The speed is zero.
The speed is zero.
Question 5

e. Use the drop down responses to complete the paragraph.

(3 points)
Energy
be created or destroyed by ordinary physical or chemical process.

This concept is called the

Throughout the experiment, the total amount of energy must
.

When potential energy goes down, kinetic energy
.

When potential energy goes up, kinetic energy
.

Answer 1

Here are the responses to the questions based on the motion of the pendulum:

Question 1
a. At position A, describe the energy of the pendulum ball.
Response: Potential energy is at its highest value, while kinetic energy is at its lowest value.

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Question 2
b. Drag the terms into the blanks to correctly complete the paragraph.
At positions B and C, potential energy is decreasing and kinetic energy is increasing.
At positions E and F, potential energy is decreasing and kinetic energy is increasing.

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Question 3
c. At position D, describe the energy of the pendulum ball.
Response: Kinetic energy is at its highest value, while potential energy is at its lowest value.

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Question 4
d. Describe the speed of the pendulum ball at position D.
Response: The speed is at its highest value.

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Question 5
e. Use the drop down responses to complete the paragraph.
Energy cannot be created or destroyed by ordinary physical or chemical processes.
This concept is called the law of conservation of energy.
Throughout the experiment, the total amount of energy must remain constant.
When potential energy goes down, kinetic energy goes up.
When potential energy goes up, kinetic energy goes down.