PhET Moving Man Simulation Part 2: Discover Physics Fun

1. From the information of the blue slider (position) does the speed of the object get faster.

True

False

The blue slider represents the position of the object. If the speed of the object is getting faster, it means that the object is covering more distance in the same amount of time. Therefore, if the position of the blue slider is changing at a faster rate, it indicates that the speed of the object is indeed increasing. Hence, the answer is true.

Explanation

The blue slider represents the position of the object. If the speed of the object is getting faster, it means that the object is covering more distance in the same amount of time. Therefore, if the position of the blue slider is changing at a faster rate, it indicates that the speed of the object is indeed increasing. Hence, the answer is true.

2. If the graph of velocity is linear and increasing, that is the velocity of the object is increasing by the same amount ever second, then it has a positive acceleration

True

False

If the graph of velocity is linear and increasing, it means that the velocity of the object is increasing at a constant rate. This indicates that the object is experiencing a positive acceleration. Acceleration is the rate at which velocity changes, so if the velocity is increasing by the same amount every second, it implies that the object is accelerating in a positive direction. Therefore, the statement "If the graph of velocity is linear and increasing, then it has a positive acceleration" is true.

Explanation

If the graph of velocity is linear and increasing, it means that the velocity of the object is increasing at a constant rate. This indicates that the object is experiencing a positive acceleration. Acceleration is the rate at which velocity changes, so if the velocity is increasing by the same amount every second, it implies that the object is accelerating in a positive direction. Therefore, the statement "If the graph of velocity is linear and increasing, then it has a positive acceleration" is true.

3. Because the increase in the velocity is by the same amount every second, that is constant, then the acceleration of the moving man is constant.

True

False

The given statement suggests that the velocity of the moving man increases by the same amount every second, which implies a constant rate of change. If the velocity is changing at a constant rate, then the acceleration of the moving man is also constant. This is because acceleration is defined as the rate of change of velocity over time. Therefore, the statement is true.

Explanation

The given statement suggests that the velocity of the moving man increases by the same amount every second, which implies a constant rate of change. If the velocity is changing at a constant rate, then the acceleration of the moving man is also constant. This is because acceleration is defined as the rate of change of velocity over time. Therefore, the statement is true.

4. Step one: Reset all of the man's values to zero. Step Two: Using the position slider, set the man to stand near the tree. Give him a velocity of 0 m/s and an acceleration of 0.5 m/s². Step Three: Close all of the graphs Step Four: Click Play to start the man in motion until he hits the wall, then hit pause to stop recording. Step Five: Use the playback feature to answer these questions. Question: What happens to the blue (position) slider.

It stays in the same place

It moves to the right

It moves to the left

It moves to the right then to the left.

The blue (position) slider moves to the right.

Explanation

The blue (position) slider moves to the right.

5. An object accelerates when it's velocity changes, that is speeds up or slows down, or if the direction of the object is moving changes. If the red slider is a measurement of the "moving mans" velocity. Because the slider changes it's location then the moving man is acceleration.

True

False

The explanation for the given correct answer is that acceleration is defined as a change in velocity, which can occur when an object speeds up, slows down, or changes direction. In this scenario, the red slider is a measurement of the "moving man's" velocity, and since the slider changes its location, it indicates a change in velocity. Therefore, the moving man is accelerating.

Explanation

The explanation for the given correct answer is that acceleration is defined as a change in velocity, which can occur when an object speeds up, slows down, or changes direction. In this scenario, the red slider is a measurement of the "moving man's" velocity, and since the slider changes its location, it indicates a change in velocity. Therefore, the moving man is accelerating.

6. Step One. Click on the the tab "chart" at the top of the window Step Two. Reset all of the "moving mans" to zero. Step Three. Use the position slider to move the man near the center (0.0 m) Step Four. Give him a velocity of 0 m/s and an acceleration of .5 m/s/s Step Five. Start the man in motion until he hits the wall, then stop recording. Looking at only the velocity verses time graph, does the graph appears linear? is it increasing or decreasing?

Linear and increasing

Linear and decreasing

Non-linear and increasing

Non-linear and decreasing

The velocity versus time graph is linear and increasing because the man is given a constant acceleration of 0.5 m/s/s. This means that his velocity increases at a constant rate over time.

Explanation

The velocity versus time graph is linear and increasing because the man is given a constant acceleration of 0.5 m/s/s. This means that his velocity increases at a constant rate over time.

7. How does the slider "behave"?

It starts off moving fast then slows down

It starts off slow then moves faster

It moves at the same pace the entire time

It doesn't move

The slider "behaves" by starting off slow and then gradually increasing its speed. This means that initially, the movement of the slider is slow, but as time progresses, it accelerates and moves faster.

Explanation

The slider "behaves" by starting off slow and then gradually increasing its speed. This means that initially, the movement of the slider is slow, but as time progresses, it accelerates and moves faster.

8. Which of the following best describes the acceleration verses time graph.

The acceleration stays the same

The acceleration starts out positive then becomes negative

The acceleration starts out negative then becomes positive

The acceleration starts out positive then becomes more positive

The acceleration starts out negative then becomes more negative

The acceleration stays the same means that the value of acceleration remains constant over time. This implies that there is no change in the rate at which the velocity of an object is changing. The graph would show a horizontal line, indicating a constant acceleration throughout the given time period.

Explanation

The acceleration stays the same means that the value of acceleration remains constant over time. This implies that there is no change in the rate at which the velocity of an object is changing. The graph would show a horizontal line, indicating a constant acceleration throughout the given time period.

9. How does the speed of the red slider "behave".

It slow then gets fast

Its fast then becomes slow

It moves at the same the pace the entire time

It remains stationary

The correct answer is that the speed of the red slider "behaves" by moving at the same pace the entire time. This means that the speed of the red slider remains constant and does not change throughout the given scenario.

Explanation

The correct answer is that the speed of the red slider "behaves" by moving at the same pace the entire time. This means that the speed of the red slider remains constant and does not change throughout the given scenario.

10. What happens to the red (Velocity) slider?

Stays the same

It moves to the right

It moves to the left

It moves to right then to the left

The red (Velocity) slider moves to the left.

Explanation

The red (Velocity) slider moves to the left.

11. If the Moving Man starts from rest, what does the position-time graph look like during constant acceleration?

A horizontal line.

An upward-sloping line.

A downward-sloping line.

An inverted U-shaped curve.

Starting from rest with constant acceleration, the position-time graph is a parabolic curve, ascending smoothly. This reflects the increasing distance covered by the Moving Man as time progresses, showcasing the effects of constant acceleration.

Explanation

Starting from rest with constant acceleration, the position-time graph is a parabolic curve, ascending smoothly. This reflects the increasing distance covered by the Moving Man as time progresses, showcasing the effects of constant acceleration.

12. What happens to the velocity-time graph of the Moving Man if he accelerates uniformly?

It becomes a horizontal line.

It slopes upward.

It slopes downward.

It forms a loop.

In uniform acceleration, the velocity-time graph is a straight line with a positive slope. As the Moving Man accelerates, the graph ascends, indicating a consistent increase in velocity over time.

Explanation

In uniform acceleration, the velocity-time graph is a straight line with a positive slope. As the Moving Man accelerates, the graph ascends, indicating a consistent increase in velocity over time.

Unleash Physics Excitement With Phet Moving Man Simulation Part 2 Quiz