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)Responsespotential energypotential energykinetic energykinetic energymotion energymotion energyelectrical energyelectrical energyQuestion 2b. As the ball is falling, what is happening to its energy?(1 point)Responseskinetic energy converts to potential energy as it fallskinetic energy converts to potential energy as it fallskinetic energy stays the same as it fallskinetic energy stays the same as it fallspotential energy stays the same as it fallspotential energy stays the same as it fallspotential energy converts to kinetic energy as it fallspotential energy converts to kinetic energy as it fallsQuestion 3c. Just before the ball hits the ground, how are its speed and kinetic energy related?(1 point)ResponsesSpeed 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.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.Skip to navigation
a. When the ball is held at the top of the table (before being dropped), the ball has potential energy.
b. As the ball is falling, potential energy converts to kinetic energy.
c. Just before the ball hits the ground, speed is at its highest value, while kinetic energy is at its highest value.
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)ResponsesThe balls would make splashes of the same size.The balls would make splashes of the same size.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 size of the splash is independent of the mass of the ball.
a. 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)ResponsesAn 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.A decrease in mass causes an increase in kinetic energy.A decrease in mass causes an increase in kinetic energy.Mass does not impact kinetic energy.
b. An increase in mass causes an increase in kinetic energy.
c. What happens to the kinetic energy of a ball when it hits the water?(1 point)ResponsesSome 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.Overall, kinetic energy is lost.Overall, kinetic energy is lost.All of the kinetic energy is kept by the ball.All of the kinetic energy is kept by the ball.
c. Some of the energy is transferred to the water.
a. At which position is the potential energy the greatest?(1 point)Responses10 m10 m8 m8 m5 m5 m0 m0 mQuestion 2b. At what position is the kinetic energy the greatest?(1 point)Responses10 m10 mjust below 10 mjust below 10 mjust above 0 mjust above 0 m0 m0 mQuestion 3c. What is happening to potential energy as the ball is falling?(1 point)ResponsesPotential 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.It is impossible to tell.Question 4d. What is happening to kinetic energy as the ball is falling?(1 point)ResponsesKinetic 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.It is impossible to tell.Question 5e. What is happening to total energy as the ball is falling?(1 point)ResponsesTotal 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.
a. The potential energy is the greatest at 10 m.
b. The kinetic energy is the greatest just below 10 m.
c. Potential energy is decreasing as the ball is falling.
d. Kinetic energy is increasing as the ball is falling.
e. 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 calledpotential energy. When an object gets higher above the ground, this kind of energyincreases.b. Some objects have energy due to their motion. This is calledkinetic energy. When an object's speed gets faster, this kind of energyincreases.
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.
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.
One basketball is stored on a shelf about 4 feet high.potential energy or kinetic energy
One basketball is rolling on the floor.potential energy potential energy or 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: potential energy.
One basketball is rolling on the floor: kinetic energy.
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 or kinetic energy
One basketball is falling through the hoop near the top of the basketball goal: kinetic energy.
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)
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
Sandra sees a new kind of breakfast pastry sitting on a high 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. his DOES show an energy transfer to an object or. 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 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. his DOES show an energy transfer to an object or. 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'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
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 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
Sandra's dad pushes the grocery cart to make it start moving. This does show an energy transfer to an object.
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 B
section C
section D
section E
To determine in which section or sections the cart's kinetic energy is increasing, more information is needed. The sections A, B, C, D, and E mentioned do not provide enough context or description to determine the change in kinetic energy.
b. 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 an increasing kinetic energy.
The cart has a decreasing kinetic energy.
The cart has no kinetic energy.
Without further information, I cannot determine the specific characteristics of the cart's kinetic energy in section B.
c. Describe the cart's motion in section E.(1 point)ResponsesThe 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.The cart is not moving.Question 4d. What is happening to the cart's kinetic energy is section E?(1 point)ResponsesThe 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.The kinetic energy goes down and then up.Question 5e. In sections A, B, C, and D, what causes the cart to move?(1 point)ResponsesGravity makes the cart move.Gravity makes the cart move.Joaquin and Susanna stop pushing the cart.Joaquin and Susanna stop pushing the cart.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.Question 6f. What is the most likely explanation for the motion of the cart in section E?(1 point)ResponsesThe cart started going downhill.The cart started going downhill.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.The sports equipment fell out of the cart.The sports equipment fell out of the cart.Someone else helped Joaquin and Susanna push faster.Someone else helped Joaquin and Susanna push faster.Skip to navigation
c. Without specific information about the motion in section E, I cannot accurately describe the cart's motion.
d. Without specific information about the changes in section E, I cannot determine what is happening to the cart's kinetic energy.
e. Without specific information about the factors causing the cart to move in sections A, B, C, and D, I cannot determine the cause of its motion.
f. Without specific information about the motion and circumstances in section E, I cannot determine the most likely explanation for the cart's motion.