Question

Directions: The table below shows the speed and height over time of a ball that starts at rest, then is dropped from the top of a building, which is 60 meters (m) tall. Use the table to answer any questions that follow.

SPEED AND HEIGHT OVER TIME
Time (s) Speed (m/s) Height (m)
0.0 0 60
0.5 7 53
1.0 10 43
1.5 15 28
2.0 20 8
2.5 0 0
What is happening to the ball's energy at a time of 1.5 seconds?

Group of answer choices

The ball's kinetic energy is decreasing and its potential energy is increasing.

The ball's kinetic energy is increasing and its potential energy is decreasing.

The ball's kinetic energy is increasing and its potential energy is increasing.

The ball's kinetic energy is decreasing and its potential energy is decreasing.

Answer 1

I think the answer B

Step-by-step explanation:

Answer 2

The ball's kinetic energy is increasing and its potential energy is decreasing.

Step-by-step explanation:

Kinetic energy of a body is the energy due to its movement. The more it moves, the more kinetic energy will have.

Specifically, the kinetic energy of a body depends on its mass and speed, which are directly proportional, that is, more mass would mean more energy, and more speed would mean more energy.

On the other hand, the potential energy of a body refers to the energy due to its position, the more height is placed, more potential energy it has.

Now, these two energy conservata, that is, when one of them increases, the other one decreases. For example, at 1.5 seconds, in the table you can observe that the speed was 15 m/s and the height was 28m.

Additionally, observe that as the height decreases, the kinetic energy increases. That means the potential energy decreases, because it depends on the height.

Therefore, the right answer is the second choice. Because the kinetic energy is increasing and its potential energy is decreasing.