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A ball is held at the edge of a table top. 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 edge of the top of the table (before being dropped), what type of energy does the ball have?

(1 point)
Responses

motion energy
motion energy

kinetic energy
kinetic energy

potential energy
potential energy

electrical energy
electrical energy
Question 2
b. As the ball is falling, what is happening to its energy?(1 point)
Responses

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

potential energy stays the same as it falls
potential 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

Both speed and kinetic energy are at their lowest values.
Both speed and kinetic energy are at their lowest values.

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.

Speed is at its highest value, while kinetic energy is at its lowest value.

1 answer

Let's go through your questions one by one.

Question 1: a. When the ball is held at the edge of the top of the table (before being dropped), what type of energy does the ball have?

Response:
Potential energy
Before being dropped, the ball is at a height above the ground, which gives it potential energy due to its position.

Question 2: b. As the ball is falling, what is happening to its energy?

Response:
Potential energy converts to kinetic energy as it falls
As the ball falls, the potential energy it had (due to its height) is converted into kinetic energy (the energy of motion).

Question 3: c. Just before the ball hits the ground, how are its speed and kinetic energy related?

Response:
Both speed and kinetic energy are at their greatest values.
Just before the ball hits the ground, it is moving at its highest speed, which means its kinetic energy is also at its highest value.

So, the answers are:

  1. Potential energy
  2. Potential energy converts to kinetic energy as it falls
  3. Both speed and kinetic energy are at their greatest values.