Homework Bundle #4

Due: 11:59pm on Sunday, February 8, 2026

You will receive no credit for items you complete after the assignment is due. Grading Policy

Problem 4.4

Two forces act on an object at rest as shown in .

Part A

Add a third force that results in a net force of zero.

Draw the vector starting at the black dot. The location, orientation, and length of the vector will be graded. You can move the vectors F

1

and F

2

to construct the required vector, but be sure to return them into their initial positions before submitting the answer.

ANSWER:

Select the elements from the list and add them to the canvas setting the appropriate attributes.

Select to observe the list of the elements that can be added to the canvas. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Select to show/hide the vector for the sum of the drawn vectors. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Delete the selected element. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Press to go to keyboard navigation instructions below the canvas.

Select to remove all drawn elements. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Attributes panel is empty. Press CTRL+Y to get to the elements on the canvas. Press CTRL+M to return to the main menu. Press CTRL+Q to quit the application.

No elements selected

Press TAB to go to the next element. There is an image on the canvas: Two vectors start from a black dot. Vector F subscript 1 points horizontally to the left. Vector F subscript 2 points vertically upward. F subscript 1 is longer than F subscript 2.

F

1

F

2

Select the elements from the list and add them to the canvas setting the appropriate attributes. Press TAB to get to the main menu.

Use arrow keys to apply parallel transition to the object. Press TAB to move to the next element on the canvas. Press SHIFT+TAB to return to selecting the end point. Press DEL to delete the element from the canvas. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Press SPACE to get to the set of hotspots or use arrow keys to move on the canvas. Press ESC to quit adding or editing this element. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press CTRL+Q to quit the application.

Press SPACE to get to the set of hotspots or use arrow keys to move on the canvas. Press TAB to select the whole element. Press SHIFT+TAB to move to selecting the start point. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Press TAB to move to the next element on the canvas. Press DEL to delete the element from the canvas. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Press SPACE to get to the set of hotspots or use arrow keys to move on the canvas. Press ENTER to change the direction. Press TAB to move to the next element on the canvas. Press DEL to delete the element from the canvas. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Problem 4.8

You’re exploring a cave. Standing in a low cavern, you steady yourself by pushing straight up on the rock ceiling.

Part A

Draw a free-body diagram of yourself.

Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. The length of the vectors will not be graded.

ANSWER:

Select the elements from the list and add them to the canvas setting the appropriate attributes.

Select to observe the list of the elements that can be added to the canvas. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Select to show/hide the vector for the sum of the drawn vectors. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Delete the selected element. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Press to go to keyboard navigation instructions below the canvas.

Select to remove all drawn elements. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Attributes panel is empty. Press CTRL+Y to get to the elements on the canvas. Press CTRL+M to return to the main menu. Press CTRL+Q to quit the application.

No elements selected

Select the elements from the list and add them to the canvas setting the appropriate attributes. Press CTRL+M to get to the main menu. There is an image on the canvas: The black dot

Select the elements from the list and add them to the canvas setting the appropriate attributes. Press TAB to get to the main menu.

Use arrow keys to apply parallel transition to the object. Press TAB to move to the next element on the canvas. Press SHIFT+TAB to return to selecting the end point. Press DEL to delete the element from the canvas. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Press SPACE to get to the set of hotspots or use arrow keys to move on the canvas. Press ESC to quit adding or editing this element. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press CTRL+Q to quit the application.

Press SPACE to get to the set of hotspots or use arrow keys to move on the canvas. Press TAB to select the whole element. Press SHIFT+TAB to move to selecting the start point. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Press TAB to move to the next element on the canvas. Press DEL to delete the element from the canvas. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Press SPACE to get to the set of hotspots or use arrow keys to move on the canvas. Press ENTER to change the direction. Press TAB to move to the next element on the canvas. Press DEL to delete the element from the canvas. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Problem 4.11 – Enhanced – with Video Tutor Solution

A skier is sliding down a 15

slope. Friction is not negligible.

Part A

Identify the forces on the skier.

Check all that apply.

ANSWER:

Weight w

Kinetic friction f

k

Normal force n

Thrust F

thrust

Tension T

Static friction f

s

Problem 4.14

A constant force applied to object A causes it to accelerate at 5 m/s

2

. The same force applied to object B causes an acceleration of 3 m/s

2

. Applied to object C, it causes an acceleration of 7 m/s

2

.

Part A

Which object has the largest mass?

ANSWER:

ABC

Part B

Which object has the smallest mass?

ANSWER:

ABC

Part C

What is the ratio of mass A to mass B?

ANSWER:

m

A

m

B

=

Problem 4.22 – Enhanced – with Feedback

In a crash test, a car is driven into a solid wall at a speed of 35 mph

. shows the car’s acceleration as it crashes into the wall.

Part A

What is the maximum force experienced by the 1890kg

car?

Express your answer with the appropriate units.

ANSWER:

F

max

=

Problem 4.25 – Enhanced – with Feedback

A 55 kg

ice skater is gliding along at 3.5 m/s

. Five seconds later her speed has dropped to 2.9m/s

.

Part A

What is the magnitude of the kinetic friction acting on her skates?

Express your answer with the appropriate units.

ANSWER:

F

=

Problem 4.33 – Enhanced – with Video Tutor Solution

Your car is accelerating to the right from a stop.

For the steps and strategies involved in solving a similar problem, you may view a .

Part A

Identify all forces acting on the object and draw the free-body diagram.

Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. The exact length of your vectors will not be graded but the relative length of one to the other will be graded.

ANSWER:

Select the elements from the list and add them to the canvas setting the appropriate attributes.

Select to observe the list of the elements that can be added to the canvas. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Select to show/hide the vector for the sum of the drawn vectors. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Delete the selected element. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Press to go to keyboard navigation instructions below the canvas.

Select to remove all drawn elements. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Attributes panel is empty. Press CTRL+Y to get to the elements on the canvas. Press CTRL+M to return to the main menu. Press CTRL+Q to quit the application.

No elements selected

Select the elements from the list and add them to the canvas setting the appropriate attributes. Press CTRL+M to get to the main menu. There is an image on the canvas: The black dot

Select the elements from the list and add them to the canvas setting the appropriate attributes. Press TAB to get to the main menu.

Use arrow keys to apply parallel transition to the object. Press TAB to move to the next element on the canvas. Press SHIFT+TAB to return to selecting the end point. Press DEL to delete the element from the canvas. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Press SPACE to get to the set of hotspots or use arrow keys to move on the canvas. Press ESC to quit adding or editing this element. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press CTRL+Q to quit the application.

Press SPACE to get to the set of hotspots or use arrow keys to move on the canvas. Press TAB to select the whole element. Press SHIFT+TAB to move to selecting the start point. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Press TAB to move to the next element on the canvas. Press DEL to delete the element from the canvas. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Press SPACE to get to the set of hotspots or use arrow keys to move on the canvas. Press ENTER to change the direction. Press TAB to move to the next element on the canvas. Press DEL to delete the element from the canvas. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Problem 4.36

An ascending elevator, hanging from a cable, is coming to a stop.

Part A

Identify all forces acting on the elevator from the list below.

Select all that apply.

ANSWER:

WeightNormal forceStatic frictionTensionKinetic friction

Part B Complete previous part(s)

Problem 4.45 – Enhanced – with Feedback

A car is skidding to a stop on a level stretch of road.

Part A

Identify the number of the action/reaction pairs of forces between the car and the road surface.

ANSWER:

1 pair2 pairs3 pairsNo acting pairs of forces

Part B Complete previous part(s)

Problem 4.43 – Enhanced – with Feedback

Three ice skaters, numbered 1, 2, and 3, stand in a line, each with her hands on the shoulders of the skater in front. Skater 3, at the rear, pushes forward on skater 2. Assume the ice is frictionless.

Part A

Draw a freebody diagram for skater 2, in the middle.

Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. The length of the vectors will not be graded.

ANSWER:

Select the elements from the list and add them to the canvas setting the appropriate attributes.

Select to observe the list of the elements that can be added to the canvas. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Select to show/hide the vector for the sum of the drawn vectors. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Delete the selected element. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Press to go to keyboard navigation instructions below the canvas.

Select to remove all drawn elements. Press CTRL+Y to get to the elements on the canvas. Press CTRL+Q to quit the application.

Attributes panel is empty. Press CTRL+Y to get to the elements on the canvas. Press CTRL+M to return to the main menu. Press CTRL+Q to quit the application.

No elements selected

Select the elements from the list and add them to the canvas setting the appropriate attributes. Press CTRL+M to get to the main menu. There is an image on the canvas: The black dot

Select the elements from the list and add them to the canvas setting the appropriate attributes. Press TAB to get to the main menu.

Use arrow keys to apply parallel transition to the object. Press TAB to move to the next element on the canvas. Press SHIFT+TAB to return to selecting the end point. Press DEL to delete the element from the canvas. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Press SPACE to get to the set of hotspots or use arrow keys to move on the canvas. Press ESC to quit adding or editing this element. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press CTRL+Q to quit the application.

Press SPACE to get to the set of hotspots or use arrow keys to move on the canvas. Press TAB to select the whole element. Press SHIFT+TAB to move to selecting the start point. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Press TAB to move to the next element on the canvas. Press DEL to delete the element from the canvas. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Press SPACE to get to the set of hotspots or use arrow keys to move on the canvas. Press ENTER to change the direction. Press TAB to move to the next element on the canvas. Press DEL to delete the element from the canvas. Press CTRL+A to modify the attributes. Press CTRL+M to get to the main menu. Press ESC to quit adding or editing this element. Press CTRL+Q to quit the application.

Score Summary:

Your score on this assignment is 0.0%.