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
electrical energy
electrical energy
kinetic energy
kinetic energy
potential energy
potential energy
motion energy
motion energy
Question 2
b. As the ball is falling, what is happening to its energy?(1 point)
Responses
potential energy stays the same as it falls
potential energy stays the same as it falls
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
Question 3
c. Just before the ball hits the ground, how are its speed and kinetic energy related?(1 point)
Responses
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.
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.
Both speed and kinetic energy are at their greatest values.
Both speed and kinetic energy are at their greatest values.
Both speed and kinetic energy are at their lowest values.
Both speed and kinetic energy are at their lowest values.
Question 1
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
electrical energy
electrical energy
kinetic energy
kinetic energy
potential energy
potential energy
motion energy
potential energy
b. As the ball is falling, what is happening to its energy?(1 point)
Responses
potential energy stays the same as it falls
potential energy stays the same as it falls
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
potential energy converts to kinetic energy as it falls
thx!!!
You're welcome! If you have any more questions, feel free to ask.
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 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 ball with the lower mass would make a bigger splash.
The ball with the lower mass would make a bigger splash.
The ball with the higher mass would make a bigger splash.
The ball with the higher mass would make a bigger splash.
The balls would make splashes of the same size.
The ball with the higher mass would make a bigger splash.
a b c or d
c. The ball with the higher mass would make a bigger splash.
b. How does the mass of a falling object impact the object's kinetic energy?(1 point)
Responses
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 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.
An increase in mass causes a decrease in kinetic energy.
An increase in mass causes an increase in kinetic energy.
plz always do a b c or d
b. Mass does not impact kinetic energy.
you mean c
Apologies for the confusion. You are correct. The correct answer is c. Mass does not impact kinetic energy.
c. What happens to the kinetic energy of a ball when it hits the water?(1 point)
Responses
Some of the energy is transferred to the water.
Some of the energy is transferred to the water.
Overall, kinetic energy is gained.
Overall, kinetic energy is gained.
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.
c. Some of the energy is transferred to the water.
its a
Apologies for the mistake. You are correct. The correct answer is a. Some of the energy is transferred to the water.
plz don't make the mistake again
I apologize for the mistake. I'll make sure not to repeat it in the future. Thank you for your understanding.
Question 1
The image shows the positions of a falling ball that was dropped from 10 meters high.
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
a. At the position of 10 m, the potential energy is the greatest.
b. 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
b. Just above 0 m, the kinetic energy is the greatest.
its c
I apologize for the mistake. You are correct. The correct answer is c. Just above 0 m, the kinetic energy is the greatest.
you said that you would not make that mistake
You are right, and I apologize for making that mistake. I strive to provide accurate information, and I apologize for any confusion caused. Thank you for bringing it to my attention, and I'll make sure to be more careful in the future.
well see
I understand your concern, and I apologize for any frustration caused. I will do my best to provide accurate and reliable information in the future. If you have any other questions or concerns, please feel free to let me know.
c. 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.
c. Potential energy is decreasing as the ball is falling.
its a and you still got it wrong after 3 times
Apologies for the mistake once again. You are correct. The potential energy is indeed decreasing as the ball is falling. Thank you for your patience, and I apologize for any confusion caused.
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.
b. Kinetic energy is increasing as the ball is falling.
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.
c. Total energy is staying the same as the ball is falling.
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 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.
are` you sure
I apologize for the confusion. Here are the corrected answers:
a. Some objects have energy due to their positions above the ground. This is called gravitational 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.
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.
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.
One basketball is stored on a shelf about 4 feet high.
- potential energy – One basketball is stored on a shelf about 4 feet high.
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.
Sandra and her dad go to the grocery story. As they do their shopping, Sandra's dad asks her about her homework. Sandra remembers that she is supposed to make a list of "real world" examples of energy transfer.
Which of the following could be included on a list of examples showing an energy transfer to an object?
(4 points)
This DOES 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. – Sandra's dad pushes the grocery cart to make it start moving.
This does NOT show an energy transfer to an object. – Sandra's dad pushes the grocery cart to make it start moving.
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. – Sandra slides a gallon of milk out of the way to get a colder gallon from the back of the shelf.
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.
Sandra sees a new kind of breakfast pastry sitting on a high shelf.
This DOES show an energy transfer to an object. – Sandra sees a new kind of breakfast pastry sitting on a high shelf.
This does NOT show an energy transfer to an object. – Sandra sees a new kind of breakfast pastry sitting on a high shelf.
Sandra's dad stands still while he thinks about what is on the grocery list.
Sandra's dad pushes the grocery cart to make it start moving.
- This DOES show an energy transfer to an object. – Sandra's dad pushes the grocery cart to make it start moving.
Sandra slides a gallon of milk out of the way to get a colder gallon from the back of the shelf.
- 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.
Sandra sees a new kind of breakfast pastry sitting on a high shelf.
- This does NOT show an energy transfer to an object. – Sandra sees a new kind of breakfast pastry sitting on a high shelf.
Sandra's dad stands still while he thinks about what is on the grocery list.
- This does NOT show an energy transfer to an object.