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.
An increase in mass causes a decrease in kinetic energy.
An increase in mass causes a decrease 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.
An increase in mass causes an increase in kinetic energy.
a. How would the splashes of the two balls compare?
(1 point)
Responses
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 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.
. 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
The potential energy is greatest at the position of 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
The position where the kinetic energy is greatest is 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.
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.
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.
Total energy is staying the same.
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Question 1
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.
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.
potential energy – One basketball is stored on a shelf about 4 feet high.
kinetic energy – One basketball is rolling on the floor.
potential 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 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 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's dad stands still while he thinks about what is on the grocery list.
This DOES show an energy transfer to an object. – 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. – Sandra's dad stands still while he thinks about what is on the grocery list.
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.
This DOES show an energy transfer to an object. – Sandra sees a new kind of breakfast pastry sitting on a high shelf.
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 stands still while he thinks about what is on the grocery list.
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.
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 sections where the cart's kinetic energy is increasing are:
- Section A
- Section C
- Section D
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.