Asked by BTS ARMY

Complete the following statements with the correct words.(1 point)
An object that is stationary has (response area) energy. When the object is pushed, that energy transfers to (response area) energy. Throughout this energy transfer, the object's total energy (response area).

1st response
maximum
no
potential
kinetic

2nd response
kinetic maximum
total
potential

3rd response
decreases
increases
stays the same
Answered by BTS ARMY
When a baseball is at rest and then is thrown, what is the relationship between the ball’s potential and kinetic energy?(1 point)
Responses

As the ball’s potential energy increases, its kinetic energy increases.
As the ball’s potential energy increases, its kinetic energy increases.

As the ball’s potential energy decreases, its kinetic energy decreases.
As the ball’s potential energy decreases, its kinetic energy decreases.

As the ball’s potential energy increases, its kinetic energy decreases.
As the ball’s potential energy increases, its kinetic energy decreases.

As the ball’s potential energy decreases, its kinetic energy increases.
As the ball’s potential energy decreases, its kinetic energy increases.
Answered by BTS ARMY
A student drops a ball from a height of 60 meters. The table below shows the ball’s speed and height as time passes.



At what point in time does the ball have the highest kinetic energy?

(1 point)
Responses

At the start (0 seconds)
At the start (0 seconds)

After 0.5 seconds
After 0.5 seconds

After 2 seconds
After 2 seconds

After 2.5 seconds
After 2.5 seconds
Answered by BTS ARMY
A student observes a roller coaster at locations A, B, C, and D on the track.




Which statement is true according to the bar graph?

(1 point)
Responses

Both potential and kinetic energy change, but total energy does not change.
Both potential and kinetic energy change, but total energy does not change.

The roller coaster creates kinetic energy.
The roller coaster creates kinetic energy.

The roller coaster destroys potential energy.
The roller coaster destroys potential energy.

The roller coaster creates potential energy, but kinetic energy does not change.
The roller coaster creates potential energy, but kinetic energy does not change.
Answered by BTS ARMY
When the pendulum shown below swings from point A to point B, what happens to its total mechanical energy (ignoring friction)?



(1 point)
Responses

Total mechanical energy goes down.
Total mechanical energy goes down.

Total mechanical energy stays the same.
Total mechanical energy stays the same.

Total mechanical energy goes up.
Total mechanical energy goes up.

Total mechanical energy is not conserved.
Answered by BTS ARMY
A model roller coaster rolls from point X to point Y. Describe the energy transformation.



(1 point)
Responses

Kinetic energy transfers to potential energy, then some potential energy transfers to kinetic energy.
Kinetic energy transfers to potential energy, then some potential energy transfers to kinetic energy.

Kinetic energy transfers to potential energy, then some potential transfers to thermal energy.
Kinetic energy transfers to potential energy, then some potential transfers to thermal energy.

Thermal energy transfers to potential energy, then some potential energy transfers to thermal energy.
Thermal energy transfers to potential energy, then some potential energy transfers to thermal energy.

Potential energy transfers to kinetic energy, then some kinetic energy transfers to potential energy.
Answered by GPT-4o mini
An object that is stationary has **potential** energy. When the object is pushed, that energy transfers to **kinetic** energy. Throughout this energy transfer, the object's total energy **stays the same**.
Answered by GPT-4o mini
The correct response is:

**As the ball’s potential energy decreases, its kinetic energy increases.**

When the ball is thrown, it gains kinetic energy as it moves, while its potential energy decreases if it moves downward or remains horizontal.
Answered by GPT-4o mini
The ball will have the highest kinetic energy just before it reaches the ground, as kinetic energy increases with speed due to the conversion of potential energy as it falls. Therefore, based on the given options, the highest kinetic energy would occur **after 2.5 seconds**, assuming it has not yet hit the ground.
Answered by GPT-4o mini
The correct response is:

**Both potential and kinetic energy change, but total energy does not change.**

In a typical roller coaster system, energy transforms between potential and kinetic forms while the total mechanical energy remains constant (ignoring friction and air resistance).
Answered by GPT-4o mini
The correct response is:

**Total mechanical energy stays the same.**

In an ideal pendulum system (ignoring friction and air resistance), the total mechanical energy is conserved as it transforms between potential energy at the highest points and kinetic energy at the lowest point.
Answered by GPT-4o mini
The correct response is:

**Potential energy transfers to kinetic energy, then some kinetic energy transfers to potential energy.**

As the roller coaster rises from point X to point Y, it converts kinetic energy into potential energy. As it descends or moves, that potential energy is converted back into kinetic energy.