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Class Activities

Forces Webquest  
Activity Date: 2/13/2018

 Name _____________________________ Date ________________ Period ________

 

Forces Webquest

 

PART 1 Simulation

Directions: Go to https://phet.colorado.edu/en/simulation/forces-and-motion-basics  

·    Click on Play

·    When the APP opens select “Net Force”

● Checkmark the “Sum Forces” and “Values” at the top right

 

Net Force

1. Select one blue 50N person and a 50N red person. Move them up to the rope. Draw a diagram with the bodies, arrows, labels, and a box below.

 

 

 

 

 

 

 

 

2. What is the sum of the forces and direction for problem #1? Explain.

 

 

3. Select one blue 150N person, 100N blue person, two 50N red people. Move them up to the rope. Draw a diagram with the bodies, arrows, labels, and a box below.

 

 

 

 

 

 

 

 

4. What is the sum of the forces and direction for problem #3? Explain.

 

 

5. Select 5 people red or blue. Move them up to the rope. Draw a diagram with the bodies, arrows, labels, and a box below.

 

 

 

 

 

 

 

 

6. What is the sum of the forces and direction for problem #5? Explain.

 

PART 2

Go to http://www.darvill.clara.net/enforcemot/forces.htm  

A. Forces Tab (top left): Make sure you have clicked on the forces tab at the left of the screen for the following questions.

1. Forces are measured in Newtons (N). Why are forces considered to be vectors?

 

 

2. List three things that can change a force?

 

 

3. Explain the force of gravity. (Is it weak or strong? Which direction does act on objects?)

 

4. What is weight?

 

5. What is the Earth’s gravitational strength at ground level?

 

Read and answer the gravity questions on your own.

6. Explain what a balanced force and an unbalanced force.

 

 

7. Observe the parachute picture and answer the questions below:

a. What forces are acting on the parachute?

 

 

b. What can you say about the size of the forces?

 

 

8. The resultant force is also called the net force. Explain resultant force.

 

 

B. Friction tab (top left): click on the friction tab on the right and answer the questions below

1. What is friction?

 

 

2. What are the two main types of friction?

 

 

3. What does friction depend upon?

 

 

Watch and read the animation about friction!!

 4. What is fluid friction?

 

 

5. What does fluid friction depend upon?

 

 

6. What is drag?

 

 

7. What is a viscous liquid?

 

 

8. What is terminal velocity?

 

 

Click on the terminal velocity graph to watch what happens to the graph when the sky diver descends

9. List 3 to 5 ways to reduce friction.

 

 

 

10. List 3 to 5 ways to use friction to your advantage.

 

Part 3: THE FOUR DIFFERENT TYPES OF FORCES

Watch the video https://www.youtube.com/watch?v=iTzpnNhbvIA to answer the “Types of Force”

**Watch through each explanation of the 4 types of forces and complete the chart below.  You may need to watch the video more than once to answer the questions below

TYPE OF FORCE

DEFINITION

EXAMPLE

PICTURE