A ball is held at the top of a table. The person holding the ball drops it, and the ball is allowed to fall toward Earth. Answer the following questions about the ball.
a. When the ball is held at the top of the table (before being dropped), what type of energy does the ball have?
(1 point)
Responses
motion energy
motion energy
kinetic energy
kinetic energy
potential energy
potential energy
electrical energy
electrical energy
67 answers
The ball held at the top of the table has potential energy.
As the ball is falling, what is happening to its energy?(1 point)
Responses
kinetic energy converts to potential energy as it falls
kinetic energy converts to potential energy as it falls
potential energy converts to kinetic energy as it falls
potential energy converts to kinetic energy as it falls
kinetic energy stays the same as it falls
kinetic energy stays the same as it falls
potential energy stays the same as it falls
Responses
kinetic energy converts to potential energy as it falls
kinetic energy converts to potential energy as it falls
potential energy converts to kinetic energy as it falls
potential energy converts to kinetic energy as it falls
kinetic energy stays the same as it falls
kinetic energy stays the same as it falls
potential energy stays the same as it falls
As the ball is falling, its potential energy converts to kinetic energy.
Just before the ball hits the ground, how are its speed and kinetic energy related?(1 point)
Responses
Both speed and kinetic energy are at their lowest values.
Both speed and kinetic energy are at their lowest values.
Speed is at its highest value, while kinetic energy is at its lowest value.
Speed is at its highest value, while kinetic energy is at its lowest value.
Speed is at its lowest value, which kinetic energy is at its highest value.
Speed is at its lowest value, which kinetic energy is at its highest value.
Both speed and kinetic energy are at their greatest values.
Responses
Both speed and kinetic energy are at their lowest values.
Both speed and kinetic energy are at their lowest values.
Speed is at its highest value, while kinetic energy is at its lowest value.
Speed is at its highest value, while kinetic energy is at its lowest value.
Speed is at its lowest value, which kinetic energy is at its highest value.
Speed is at its lowest value, which kinetic energy is at its highest value.
Both speed and kinetic energy are at their greatest values.
Just before the ball hits the ground, both speed and kinetic energy are at their highest values.
A student is testing how mass impacts kinetic energy. From the same height on a diving board, she drops two balls into a swimming pool. One ball has a bigger mass than the other.
a. How would the splashes of the two balls compare?
(1 point)
Responses
The ball with the higher mass would make a bigger splash.
The ball with the higher mass would make a bigger splash.
The ball with the lower mass would make a bigger splash.
The ball with the lower mass would make a bigger splash.
The size of the splash is independent of the mass of the ball.
The size of the splash is independent of the mass of the ball.
The balls would make splashes of the same size.
a. How would the splashes of the two balls compare?
(1 point)
Responses
The ball with the higher mass would make a bigger splash.
The ball with the higher mass would make a bigger splash.
The ball with the lower mass would make a bigger splash.
The ball with the lower mass would make a bigger splash.
The size of the splash is independent of the mass of the ball.
The size of the splash is independent of the mass of the ball.
The balls would make splashes of the same size.
The ball with the higher mass would make a bigger splash.
How does the mass of a falling object impact the object's kinetic energy?(1 point)
Responses
An increase in mass causes an increase in kinetic energy.
An increase in mass causes an increase in kinetic energy.
Mass does not impact kinetic energy.
Mass does not impact kinetic energy.
A decrease in mass causes an increase in kinetic energy.
A decrease in mass causes an increase in kinetic energy.
An increase in mass causes a decrease in kinetic energy.
Responses
An increase in mass causes an increase in kinetic energy.
An increase in mass causes an increase in kinetic energy.
Mass does not impact kinetic energy.
Mass does not impact kinetic energy.
A decrease in mass causes an increase in kinetic energy.
A decrease in mass causes an increase in kinetic energy.
An increase in mass causes a decrease in kinetic energy.
An increase in mass causes an increase in kinetic energy.
What happens to the kinetic energy of a ball when it hits the water?(1 point)
Responses
All of the kinetic energy is kept by the ball.
All of the kinetic energy is kept by the ball.
Overall, kinetic energy is lost.
Overall, kinetic energy is lost.
Some of the energy is transferred to the water.
Some of the energy is transferred to the water.
Overall, kinetic energy is gained.
Responses
All of the kinetic energy is kept by the ball.
All of the kinetic energy is kept by the ball.
Overall, kinetic energy is lost.
Overall, kinetic energy is lost.
Some of the energy is transferred to the water.
Some of the energy is transferred to the water.
Overall, kinetic energy is gained.
Some of the energy is transferred to the water. Overall, kinetic energy is lost.
a. At which position is the potential energy the greatest?
(1 point)
Responses
10 m
10 m
8 m
8 m
5 m
5 m
0 m
(1 point)
Responses
10 m
10 m
8 m
8 m
5 m
5 m
0 m
The potential energy is the greatest at 10 m.
At what position is the kinetic energy the greatest?(1 point)
Responses
10 m
10 m
just below 10 m
just below 10 m
just above 0 m
just above 0 m
0 m
Responses
10 m
10 m
just below 10 m
just below 10 m
just above 0 m
just above 0 m
0 m
The kinetic energy is the greatest at just above 0 m.
What is happening to potential energy as the ball is falling?(1 point)
Responses
Potential energy is decreasing.
Potential energy is decreasing.
Potential energy is increasing.
Potential energy is increasing.
Potential energy is staying the same.
Potential energy is staying the same.
It is impossible to tell.
Responses
Potential energy is decreasing.
Potential energy is decreasing.
Potential energy is increasing.
Potential energy is increasing.
Potential energy is staying the same.
Potential energy is staying the same.
It is impossible to tell.
As the ball is falling, potential energy is decreasing.
What is happening to kinetic energy as the ball is falling?(1 point)
Responses
Kinetic energy is decreasing.
Kinetic energy is decreasing.
Kinetic energy is increasing.
Kinetic energy is increasing.
Kinetic energy is staying the same.
Kinetic energy is staying the same.
It is impossible to tell.
Responses
Kinetic energy is decreasing.
Kinetic energy is decreasing.
Kinetic energy is increasing.
Kinetic energy is increasing.
Kinetic energy is staying the same.
Kinetic energy is staying the same.
It is impossible to tell.
As the ball is falling, kinetic energy is increasing.
What is happening to total energy as the ball is falling?(1 point)
Responses
Total energy is decreasing.
Total energy is decreasing.
Total energy is increasing.
Total energy is increasing.
Total energy is staying the same.
Total energy is staying the same.
It is impossible to tell.
Responses
Total energy is decreasing.
Total energy is decreasing.
Total energy is increasing.
Total energy is increasing.
Total energy is staying the same.
Total energy is staying the same.
It is impossible to tell.
Total energy is staying the same.
Makayla and Aaron are watching a basketball game after school. As they observe different basketballs in the gym, they think about what they learned in class earlier that day. Help them complete these sentences to explain what they learned.(4 points)
a. Some objects have energy due to their positions above the ground. This is called
. When an object gets higher above the ground, this kind of energy
.
b. Some objects have energy due to their motion. This is called
. When an object's speed gets faster, this kind of energy
.
a. Some objects have energy due to their positions above the ground. This is called
. When an object gets higher above the ground, this kind of energy
.
b. Some objects have energy due to their motion. This is called
. When an object's speed gets faster, this kind of energy
.
a. Some objects have energy due to their positions above the ground. This is called potential energy. When an object gets higher above the ground, this kind of energy increases.
b. Some objects have energy due to their motion. This is called kinetic energy. When an object's speed gets faster, this kind of energy increases.
b. Some objects have energy due to their motion. This is called kinetic energy. When an object's speed gets faster, this kind of energy increases.
Aaron and Makayla want to determine what type of energy each basketball has.
c. Identify the type or types of energy described in each situation listed below.
You might click only one answer in each row, or you might click both answers in a row.
(3 points)
potential energy kinetic energy
One basketball is stored on a shelf about 4 feet high.
potential energy – One basketball is stored on a shelf about 4 feet high.
kinetic energy – One basketball is stored on a shelf about 4 feet high.
One basketball is rolling on the floor.
potential energy – One basketball is rolling on the floor.
kinetic energy – One basketball is rolling on the floor.
One basketball is falling through the hoop near the top of the basketball goal
c. Identify the type or types of energy described in each situation listed below.
You might click only one answer in each row, or you might click both answers in a row.
(3 points)
potential energy kinetic energy
One basketball is stored on a shelf about 4 feet high.
potential energy – One basketball is stored on a shelf about 4 feet high.
kinetic energy – One basketball is stored on a shelf about 4 feet high.
One basketball is rolling on the floor.
potential energy – One basketball is rolling on the floor.
kinetic energy – One basketball is rolling on the floor.
One basketball is falling through the hoop near the top of the basketball goal
potential energy – One basketball is falling through the hoop near the top of the basketball goal
kinetic energy – One basketball is falling through the hoop near the top of the basketball goal
kinetic energy – One basketball is falling through the hoop near the top of the basketball goal
potential energy or kinetic energy
One basketball is stored on a shelf about 4 feet high.
One basketball is stored on a shelf about 4 feet high.
potential energy
One basketball is rolling on the floor.
potential energy or kinetic energy
potential energy or kinetic energy
kinetic energy
One basketball is falling through the hoop near the top of the basketball goal.
potential energy or kinetic energy
potential energy or kinetic energy
kinetic energy
Sandra sees a new kind of breakfast pastry sitting on a high shelf.
This DOES show an energy transfer to an object or
This does NOT show an energy transfer to an object.
This DOES show an energy transfer to an object or
This does NOT show an energy transfer to an object.
This does not show an energy transfer to an object.
Sandra's dad stands still while he thinks about what is on the grocery list.
This DOES show an energy transfer to an object or
This does NOT show an energy transfer to an object.
This DOES show an energy transfer to an object or
This does NOT show an energy transfer to an object.
This does not show an energy transfer to an object.
Sandra slides a gallon of milk out of the way to get a colder gallon from the back of the shelf.
This DOES show an energy transfer to an object or
This does NOT show an energy transfer to an object.
This DOES show an energy transfer to an object or
This does NOT show an energy transfer to an object.
This does not show an energy transfer to an object.
Sandra's dad pushes the grocery cart to make it start moving.
This DOES show an energy transfer to an object or
This does NOT show an energy transfer to an object.
This DOES show an energy transfer to an object or
This does NOT show an energy transfer to an object.
This does show an energy transfer to an object.
Joaquin and Susanna are pushing a cart containing sports equipment along one side of their local sports field.
In section A, the cart is speeding up.
In section B, the cart is rolling at a constant speed.
In section C, the cart is speeding up again.
In section D, the cart is rolling at a new constant speed.
Then they think about how this data relates to what they learned in class about kinetic energy.
Study the graph and then answer the questions.
a. In which section or sections is the cart's kinetic energy increasing?
You might need to choose more than one answer.
(1 point)
Responses
section A
section A
section B
section B
section C
section C
section D
section D
section E
In section A, the cart is speeding up.
In section B, the cart is rolling at a constant speed.
In section C, the cart is speeding up again.
In section D, the cart is rolling at a new constant speed.
Then they think about how this data relates to what they learned in class about kinetic energy.
Study the graph and then answer the questions.
a. In which section or sections is the cart's kinetic energy increasing?
You might need to choose more than one answer.
(1 point)
Responses
section A
section A
section B
section B
section C
section C
section D
section D
section E
The cart's kinetic energy is increasing in section A and section C.
How would you describe the cart's kinetic energy in section B?(1 point)
Responses
The cart has a constant kinetic energy.
The cart has a constant kinetic energy.
The cart has an increasing kinetic energy.
The cart has an increasing kinetic energy.
The cart has a decreasing kinetic energy.
The cart has a decreasing kinetic energy.
The cart has no kinetic energy.
Responses
The cart has a constant kinetic energy.
The cart has a constant kinetic energy.
The cart has an increasing kinetic energy.
The cart has an increasing kinetic energy.
The cart has a decreasing kinetic energy.
The cart has a decreasing kinetic energy.
The cart has no kinetic energy.
The cart has a constant kinetic energy in section B.
Describe the cart's motion in section E.(1 point)
Responses
The cart is getting slower.
The cart is getting slower.
The cart is getting faster.
The cart is getting faster.
The cart is moving at a constant speed.
The cart is moving at a constant speed.
The cart is not moving.
Responses
The cart is getting slower.
The cart is getting slower.
The cart is getting faster.
The cart is getting faster.
The cart is moving at a constant speed.
The cart is moving at a constant speed.
The cart is not moving.
There is no section E mentioned or visible in the provided description and graph.
c. Describe the cart's motion in section E.(1 point)
Responses
The cart is getting slower.
The cart is getting slower.
The cart is getting faster.
The cart is getting faster.
The cart is moving at a constant speed.
The cart is moving at a constant speed.
The cart is not moving.
Responses
The cart is getting slower.
The cart is getting slower.
The cart is getting faster.
The cart is getting faster.
The cart is moving at a constant speed.
The cart is moving at a constant speed.
The cart is not moving.
As I mentioned earlier, there is no section E mentioned or visible in the provided description and graph.
d. What is happening to the cart's kinetic energy is section E?(1 point)
Responses
The kinetic energy is increasing.
The kinetic energy is increasing.
The kinetic energy is decreasing.
The kinetic energy is decreasing.
The kinetic energy is staying the same.
The kinetic energy is staying the same.
The kinetic energy goes down and then up.
Responses
The kinetic energy is increasing.
The kinetic energy is increasing.
The kinetic energy is decreasing.
The kinetic energy is decreasing.
The kinetic energy is staying the same.
The kinetic energy is staying the same.
The kinetic energy goes down and then up.
Since there is no section E mentioned or visible in the provided description and graph, it is not possible to determine what is happening to the cart's kinetic energy in section E.
in section E the cart is moving down hill so?
I apologize for the confusion. In section E, when the cart is moving downhill, the potential energy of the cart is decreasing, while its kinetic energy is increasing. Therefore, the kinetic energy of the cart is increasing in section E.
e. In sections A, B, C, and D, what causes the cart to move?(1 point)
Responses
Joaquin and Susanna transfer energy to the cart.
Joaquin and Susanna transfer energy to the cart.
The ground transfers energy to the cart.
The ground transfers energy to the cart.
Gravity makes the cart move.
Gravity makes the cart move.
Joaquin and Susanna stop pushing the cart.
Responses
Joaquin and Susanna transfer energy to the cart.
Joaquin and Susanna transfer energy to the cart.
The ground transfers energy to the cart.
The ground transfers energy to the cart.
Gravity makes the cart move.
Gravity makes the cart move.
Joaquin and Susanna stop pushing the cart.
In sections A, B, C, and D, Joaquin and Susanna transfer energy to the cart by pushing it.
f. What is the most likely explanation for the motion of the cart in section E?(1 point)
Responses
The sports equipment fell out of the cart.
The sports equipment fell out of the cart.
Joaquin and Susanna stopped pushing the cart and let it roll to a stop.
Joaquin and Susanna stopped pushing the cart and let it roll to a stop.
Someone else helped Joaquin and Susanna push faster.
Someone else helped Joaquin and Susanna push faster.
The cart started going downhill.
Responses
The sports equipment fell out of the cart.
The sports equipment fell out of the cart.
Joaquin and Susanna stopped pushing the cart and let it roll to a stop.
Joaquin and Susanna stopped pushing the cart and let it roll to a stop.
Someone else helped Joaquin and Susanna push faster.
Someone else helped Joaquin and Susanna push faster.
The cart started going downhill.
The most likely explanation for the motion of the cart in section E is that the cart started going downhill.
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.
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
Potential energy and kinetic energy are both at their highest values.
Potential energy and kinetic energy are both at their highest 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 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.
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
Potential energy and kinetic energy are both at their highest values.
Potential energy and kinetic energy are both at their highest 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 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.
At position A, the pendulum ball has potential energy at its highest value, while its kinetic energy is at its lowest value.
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 areais decreasing and Response area is increasing.
At positions E and F, Response areais decreasing and Response area is increasing.
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 areais decreasing and Response area is increasing.
At positions E and F, Response areais decreasing and Response area is increasing.
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.
At positions E and F, potential energy is decreasing and kinetic energy is increasing.
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.
(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.
At position D, potential energy is at its highest value, while kinetic energy is at its lowest value.
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.
(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.
At position D, the speed of the pendulum ball is at its lowest value.
e. Use the drop down responses to complete the paragraph.
(5 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
.
(5 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
.
(5 points)
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 increases.
When potential energy goes up, kinetic energy decreases.
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 increases.
When potential energy goes up, kinetic energy decreases.
i made a 79 thx for helping he not geting my but wiped
You're welcome! I'm glad I could help. If you have any more questions, feel free to ask.