An illustration shows a graph titled Position-Time Graph. The x-axis is labeled ‘Time (Expressed in Minutes)’ and is broken down in increments of one from 0 to 9. The y-axis is labeled ‘Position’ and is broken down in increments of five from -20 to 35.

Question

An illustration shows a graph titled Position-Time Graph. The x-axis is labeled ‘Time (Expressed in Minutes)’ and is broken down in increments of one from 0 to 9. The y-axis is labeled ‘Position’ and is broken down in increments of five from -20 to 35.
What kind of senario could this graph represent?

(1 point)
Responses

The time-position graph shown shows that the starting point of the person traveling in the elevator is the ground floor
The time-position graph shown shows that the starting point of the person traveling in the elevator is the ground floor

The position of a shark that is being tracked relative to how far the shark is swimming from its starting point, the Equator. The Equator is represented by 0 on the y-axis of the chart.  Movement north from the Equator is assigned a positive value and movement south is assigned a negative value.
The position of a shark that is being tracked relative to how far the shark is swimming from its starting point, the Equator. The Equator is represented by 0 on the y-axis of the chart.  Movement north from the Equator is assigned a positive value and movement south is assigned a negative value.

Peter’s trip lasted a total of 8 minutes, which can be inferred from the x-axis of the position-time graph. It took Peter 6 minutes to arrive at his destination which is found 25 km away from his home. After spending two minutes at the location Peter traveled to, Peter then spent 1 minute on his commute returning home. The velocity also remained constant during Peter’s trip returning home.
Peter’s trip lasted a total of 8 minutes, which can be inferred from the x-axis of the position-time graph. It took Peter 6 minutes to arrive at his destination which is found 25 km away from his home. After spending two minutes at the location Peter traveled to, Peter then spent 1 minute on his commute returning home. The velocity also remained constant during Peter’s trip returning home.
Question 6
What does the slope of a line mean on a position-time graph? What can be inferred from a slope that is observed in an upward path?

(Choose 2 correct answers that are the MOST correct)

(1 point)
Responses

The slope represents an object that is moving. 
The slope represents an object that is moving.

A slope that is observed taking a upward path shows that the object is accelerating.
 A slope that is observed taking a upward path shows that the object is accelerating.

The slope represents an object that is moving at a constant velocity, accelerating, or stationary. 
The slope represents an object that is moving at a constant velocity, accelerating, or stationary.

A slope that is observed taking a downward path shows that the object is accelerating.
 A slope that is observed taking a downward path shows that the object is accelerating.
Question 7
What can be inferred by the presence of a horizontal line on a position-time graph?(1 point)
Responses

A horizontal line found on a position-time graph represents an object that is stationary (not moving).
A horizontal line found on a position-time graph represents an object that is stationary (not moving).

A horizontal line found on a position-time graph represents an object that is accelerating.
A horizontal line found on a position-time graph represents an object that is accelerating.

A horizontal line found on a position-time graph represents an object that is decelerating.
A horizontal line found on a position-time graph represents an object that is decelerating.

A horizontal line found on a position-time graph represents an object that is in motion.
A horizontal line found on a position-time graph represents an object that is in motion.
Question 8
Use the graph below to answer the following questions.

An illustration of a position-time graph is utilized for learners to observe floors traveled by an individual in an elevator over a period of time.

Oxford Designers & Illustrators Ltd/Pearson Education Ltd

The time-position graph shown shows that the starting point of the person traveling in the elevator is the ground floor. Moving up, or north, in the elevators, is considered positive displacement. The first floor can be assigned a value of positive one, the second a value of positive two, and so on. The starting point at the ground floor can be assigned a zero value as it is the starting point.

Consider the fact that displacement can have a positive, negative, or zero value. Can it be said that the overall displacement of the person traveling in the elevator is positive, negative, or zero?

(1 point)
Responses

The overall displacement is assigned a positive value.
The overall displacement is assigned a positive value.

The overall displacement is assigned a negative value.
The overall displacement is assigned a negative value.

The overall displacement is assigned a zero value.
The overall displacement is assigned a zero value.
Question 9
Which quantity in this image is vector, which is scalar?

An illustration shows two cyclists of mass 160 kg moving with a velocity of 10 meters per second to the left.

(1 point)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
scalar quantity
vector quantity
Question 10
What can be inferred about the magnitude and direction of the individual forces acting on an object if the net force is zero?(1 point)
Responses

They must have different magnitudes and the same directions
They must have different magnitudes and the same directions

They must have different magnitudes and opposite directions
They must have different magnitudes and opposite directions

They must have the same magnitudes and opposite directions
They must have the same magnitudes and opposite directions

They must have the same magnitudes and the same directions
They must have the same magnitudes and the same directions
Question 11
 If a person weighs 50 kg, and is simply standing still, the force of gravity is still acting on this person at an acceleration rate of 9.8m/s^2. Find the force exerted by this person.

(the first blank is a number, the second blank is a unit)

(1 point)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Response area Response area 
Question 12
A race car accelerates from a speed of 20 m/s to 60 m/s in just 5 seconds while traveling in a straight line.

What is the car's acceleration?

(1 point)
Responses

20 m/s^2
20 m/s^2

16 m/s^2
16 m/s^2

8 m/s^2
8 m/s^2

4 m/s^2
4 m/s^2
Question 13
Three individuals are pushing a vehicle that is held in place by 600 N of force, and the combined effort of all three individuals pushing the car forward is 625 N. What was the net force exerted on the car?

A positive value can be assigned to the force keeping the car stationary, and a negative value can be assigned to the force exerted by the people attempting to move the car forward.

(1 point)
Responses

-25N
-25N

25N
25N

-1205N
-1205N

1205N
1205N
Question 14
A football player with a mass of 97 kg runs up field at a velocity of 8 m/s. The momentum of the football player can be calculated using these two figures.

What is the momentum of the football player?

(1 point)
Responses

12N
12N

776N
776N

12 kg*m/s
12 kg*m/s

776 kg*m/s
776 kg*m/s
Question 15
A hockey puck is traveling at a velocity of 30 m/sm/s. The puck has a mass of 0.12 kg. What momentum is the puck traveling with? (1 point)
Responses

2.4N
2.4N

3.6 N
3.6 N

2.4 kg*m/s
2.4 kg*m/s

3.6 kg*m/s
3.6 kg*m/s
Question 16
 Consider the following graph of velocity vs. time:

An illustration shows the velocity versus time graph.

This graph shows velocity vs. time for an object that experiences a force.

During which sections is the velocity constant?

(1 point)
Responses

A and E
A and E

A, B, C, D, E
A, B, C, D, E

B, C, and D
B, C, and D

C
C
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GPT-4o mini · Answer

Here are the correct responses to your questions based on the information provided:

Question 5: What kind of scenario could this graph represent?
Response: Peter’s trip lasted a total of 8 minutes, which can be inferred from the x-axis of the position-time graph. It took Peter 6 minutes to arrive at his destination which is found 25 km away from his home. After spending two minutes at the location Peter traveled to, Peter then spent 1 minute on his commute returning home. The velocity also remained constant during Peter’s trip returning home.

Question 6: What does the slope of a line mean on a position-time graph? What can be inferred from a slope that is observed in an upward path?
Responses (Choose 2):

The slope represents an object that is moving at a constant velocity, accelerating, or stationary.
A slope that is observed taking an upward path shows that the object is accelerating (if the upward path is not linear).

Question 7: What can be inferred by the presence of a horizontal line on a position-time graph?
Response: A horizontal line found on a position-time graph represents an object that is stationary (not moving).

Question 8: Can it be said that the overall displacement of the person traveling in the elevator is positive, negative, or zero?
Response: The overall displacement is assigned a positive value.

Question 9: Which quantity in this image is vector, which is scalar?
Responses:

Scalar Quantity: Mass (160 kg)
Vector Quantity: Velocity (10 meters per second to the left)

Question 10: What can be inferred about the magnitude and direction of the individual forces acting on an object if the net force is zero?
Response: They must have the same magnitudes and opposite directions.

Question 11: If a person weighs 50 kg, and is simply standing still, find the force exerted by this person.
Response Area: 490 (N)
(The force can be calculated using F = m * g = 50 kg * 9.8 m/s² = 490 N)

Question 12: A race car accelerates from a speed of 20 m/s to 60 m/s in just 5 seconds. What is the car's acceleration?
Response: 8 m/s²
(Acceleration = (Final velocity - Initial velocity) / time = (60 m/s - 20 m/s) / 5 s = 40 m/s / 5 s = 8 m/s²)

Question 13: Three individuals are pushing a vehicle. What was the net force exerted on the car?
Response: -25 N
(The net force can be calculated as the force applied (625 N) minus the stationary force (600 N): 625 N - 600 N = 25 N (forward), but since it's negative in context (-600 N is the force keeping it stationary), the result is -25 N).

Question 14: What is the momentum of the football player?
Response: 776 kgm/s
(Momentum = mass * velocity = 97 kg * 8 m/s = 776 kgm/s)

Question 15: What momentum is the puck traveling with?
Response: 3.6 kgm/s
(Momentum = mass * velocity = 0.12 kg * 30 m/s = 3.6 kgm/s)

Question 16: During which sections is the velocity constant?
Response: B, C, and D
(Velocity is constant in segments where the graph shows a horizontal line).

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