Two postal delivery workers have different routes. They both travel from the post office, to neighborhoods to deliver mail, and then back to the post office. Which statement must be true about the two postal delivery workers?(1 point)

Question

Responses

They each travel a distance of 0 miles.
They each travel a distance of 0 miles.

They travel the same distance.
They travel the same distance.

They each have a displacement of 0 miles.
They each have a displacement of 0 miles.

They have the same velocity.

2. Matt is walking at 1.25 miles per hour to the east. Jaime is walking at 1.25 miles per hour to the south. Which statement describes the movement of Matt and Jaime?(1 point)
Responses

They have different speeds but the same velocity.
They have different speeds but the same velocity.

They have different speeds and different velocities.
They have different speeds and different velocities.

They have the same speed but different velocities.
They have the same speed but different velocities.

They have the same speed and the same velocity.

3. Use the graph showing the motion of a person over time to answer the question.The vertical axis is labeled, position from home (km), and ranges from a 0 km to 14 km. The horizontal axis is labeled, time (minutes) and labeled from 0 minutes to 50 minutes. The graph shows a line that starts from the origin and slopes upward to 12 km at 10 minutes. The line remains at 12 km from 10 minutes to 30 minutes. The line slopes downward from 12 km to 0 km from 30 minutes to 45 minutes.Which statement correctly compares his motion during the first 10 minutes to his motion during the last 10 minutes?(1 point)
He is speeding up during the first 10 minutes and slowing down during the last 10 minutes.
He is speeding up during the first 10 minutes and slowing down during the last 10 minutes.

He is going faster and in a different direction during the first 10 minutes than in the last 10 minutes.
He is going faster and in a different direction during the first 10 minutes than in the last 10 minutes.

He is going slower and in a different direction during the first 10 minutes than in the last 10 minutes.
He is going slower and in a different direction during the first 10 minutes than in the last 10 minutes.

His acceleration increases during the first 10 minutes and decreases during the last 10 minutes.

4. What does a horizontal line on a position-time graph indicate about the object?(1 point)
Responses

The object is accelerating.
The object is accelerating.

The object remains still.
The object remains still.

The object has a position of zero.
The object has a position of zero.

The object has a constant, nonzero velocity.

5. A force acts on an object. Which option describes an action that could prevent the object from moving?(1 point)
Responses

a force applied in the opposite direction with a greater magnitude at the same time
a force applied in the opposite direction with a greater magnitude at the same time

a force applied in the opposite direction with the same magnitude at the same time
a force applied in the opposite direction with the same magnitude at the same time

a force applied in the same direction with a greater magnitude at the same time
a force applied in the same direction with a greater magnitude at the same time

a force applied in the same direction with the same magnitude at the same time

6. Which option is the force with the greatest magnitude?(1 point)
Responses

the force needed to lift a hairbrush
the force needed to lift a hairbrush

the force needed to lift a textbook
the force needed to lift a textbook

the force needed to lift a chair
the force needed to lift a chair

the force needed to lift a pencil

7. A box is against a wall. A person pushes on the box, but the box does not move. Is this situation an example of a force?(1 point)
Responses

Yes, this is an example of a force because gravity is pulling the box down.
Yes, this is an example of a force because gravity is pulling the box down.

No, this is not an example of a force because a force pulls an object.
No, this is not an example of a force because a force pulls an object.

No, this is not an example of a force because the box did not move.
No, this is not an example of a force because the box did not move.

Yes, this is an example of a force because a force is a push or pull.

8. Which situation describes a non-contact force changing the speed of an object?(1 point)
Responses

a ball accelerating as it rolls down a hill
a ball accelerating as it rolls down a hill

a gust of wind blowing a leaf away
a gust of wind blowing a leaf away

a bicycle accelerating as the rider pedals more quickly
a bicycle accelerating as the rider pedals more quickly

a drawer opening when a user pulls the handle

9. In which situation would the momentum of a moving object increase?(1 point)
Responses

A force acting in the direction opposite the object’s motion is removed from the object.
A force acting in the direction opposite the object’s motion is removed from the object.

A force acting in the direction of the object’s motion is removed from the object.
A force acting in the direction of the object’s motion is removed from the object.

A new force acts on the object, opposing the object’s motion.
A new force acts on the object, opposing the object’s motion.

Two forces of equal magnitude act on the object in opposite directions.

10. When you trip, your foot stops, but your body continues to move forward. Which statement best explains why this happens?(1 point)
Responses

Newton's Second Law of Motion pushes your body forward after your foot stops.
Newton's Second Law of Motion pushes your body forward after your foot stops.

An unbalanced force pushes your body forward.
An unbalanced force pushes your body forward.

An unbalanced force stops your foot but does not act on the rest of your body.
An unbalanced force stops your foot but does not act on the rest of your body.

The unbalanced force that stops your foot pulls your body forward.

11. A bowler throws a ball down the lane toward the pins. The ball reaches the pins and slowly moves through them, knocking down the center pins but leaving the end pins standing. The bowler wants the ball to reach all the pins. Which changes should the bowler make so that the ball has a greater acceleration?(1 point)
Responses

The bowler should choose a ball with less mass or throw the ball with more force.
The bowler should choose a ball with less mass or throw the ball with more force.

The bowler should choose a ball with more mass or throw the ball with less force.
The bowler should choose a ball with more mass or throw the ball with less force.

The bowler should choose a ball with more mass or throw the ball with more force.
The bowler should choose a ball with more mass or throw the ball with more force.

The bowler should choose a ball with less mass or throw the ball with less force.

12. In which situation does the reactive force between two colliding objects cause a physical change?(1 point)
Responses

a baseball player swinging a bat and hitting a baseball, causing the bat to shatter
a baseball player swinging a bat and hitting a baseball, causing the bat to shatter

two bumper cars at an amusement park colliding, causing both cars to change direction
two bumper cars at an amusement park colliding, causing both cars to change direction

the exhaust from a rocket thrusting the rocket away from the ground
the exhaust from a rocket thrusting the rocket away from the ground

a swing hitting another swing, causing the second swing to move away
a swing hitting another swing, causing the second swing to move away

13. A sledgehammer is swung at a wall. Once the sledgehammer hits the wall it does not breakthrough. How do the hammer and the wall act on each other?(1 point)
Responses

The hammer exerts a stronger force than the wall but in the opposite direction.
The hammer exerts a stronger force than the wall but in the opposite direction.

The hammer and the wall exert forces on each other that are equal in magnitude but in opposite directions.
The hammer and the wall exert forces on each other that are equal in magnitude but in opposite directions.

The hammer and the wall exert forces on each other that are equal in magnitude and in the same direction.
The hammer and the wall exert forces on each other that are equal in magnitude and in the same direction.

The hammer exerts a stronger force than the wall but in the same direction.

14. skip and 15. skip

Answer 1

Here are the correct answers to your questions:

1. They each have a displacement of 0 miles.

   • Both postal workers return to the post office, meaning their displacement (change in position) is zero.

2. They have the same speed but different velocities.

   • Both are walking at 1.25 miles per hour, but in different directions.

3. He is speeding up during the first 10 minutes and slowing down during the last 10 minutes.

   • The graph shows the person moving away from home (speeding up) in the first 10 minutes and then returning to home (slowing down) in the last segment.

4. The object remains still.

   • A horizontal line on a position-time graph indicates that the position is constant over time, meaning the object is not moving.

5. a force applied in the opposite direction with a greater magnitude at the same time.

   • This would result in a net force acting against the object's motion, preventing it from moving.

6. the force needed to lift a chair.

   • Lifting a chair typically requires more force than lifting lighter objects like a hairbrush or pencil.

7. Yes, this is an example of a force because a force is a push or pull.

   • The person pushing the box exerts a force, regardless of whether the box moves.

8. a gust of wind blowing a leaf away.

   • This is an example of a non-contact force (air pressure and wind) changing an object's speed.

9. A force acting in the direction of the object’s motion is removed from the object.

   • If opposition to the force is removed, the object's momentum would increase.

10. An unbalanced force stops your foot but does not act on the rest of your body.

    • The inertia of the body continues to move forward while the foot stops.

11. The bowler should choose a ball with less mass or throw the ball with more force.

    • According to Newton's second law, to increase acceleration, you can either decrease mass or increase the applied force.

12. a baseball player swinging a bat and hitting a baseball, causing the bat to shatter.

    • This situation demonstrates a physical change due to the reactive force.

13. The hammer and the wall exert forces on each other that are equal in magnitude but in opposite directions.

    • This reflects Newton's third law of motion.

Feel free to ask if you have more questions or need further clarification!

Answer 2

just say the answer options not explaining it

Answer 3

Sure! Here are the answer options:

1. They each have a displacement of 0 miles.
2. They have the same speed but different velocities.
3. He is speeding up during the first 10 minutes and slowing down during the last 10 minutes.
4. The object remains still.
5. a force applied in the opposite direction with a greater magnitude at the same time.
6. the force needed to lift a chair.
7. Yes, this is an example of a force because a force is a push or pull.
8. a gust of wind blowing a leaf away.
9. A force acting in the direction of the object’s motion is removed from the object.
10. An unbalanced force stops your foot but does not act on the rest of your body.
11. The bowler should choose a ball with less mass or throw the ball with more force.
12. a baseball player swinging a bat and hitting a baseball, causing the bat to shatter.
13. The hammer and the wall exert forces on each other that are equal in magnitude but in opposite directions.

Answer 4

3. He is going faster and in a different direction during the first 10 minutes than in the last 10 minutes.
5. a force applied in the opposite direction with the same magnitude at the same time
8. a ball accelerating as it rolls down a hill
9. A force acting in the direction opposite the object’s motion is removed from the object.

Answer 5

Here are the clarifications based on your selections:

3. Incorrect. The correct answer is: He is speeding up during the first 10 minutes and slowing down during the last 10 minutes.

4. Incorrect. The correct answer is: a force applied in the opposite direction with a greater magnitude at the same time.

5. Incorrect. The correct answer is: a gust of wind blowing a leaf away.

6. Incorrect. The correct answer is: A force acting in the direction of the object’s motion is removed from the object.

If you have any more questions or need further assistance, feel free to ask!