Introduction to Forces and Free Body Diagrams

What do the arrows or vectors represent?

• Forces acting on the object

• All the acceleration acting on the object

• All the ways an object can move

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

What is the net force of this diagram?

• 17 N, right

• 17 N, left

• 23 N, right

• 12 N, up

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

This object could be moving in which directions? (pick all that are correct):

• Up

• Down

• Left

• Right

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NGSS.3-PS2-1

NGSS.3-PS2-2

When two forces act in the same direction, how would you calculate the net force?

• Subtract the forces

• Balance the forces

• Add the forces

• Divide the forces

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NGSS.HS-PS2-1

Label a free body diagram for a book attached to a string.

a

b

F norm

F air

F tens

F grav

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NGSS.MS-PS2-4

Use this Free Body Diagram to answer the question: This is a Free Body Diagram of a laptop on a table being pushed to the right with acceleration. Name the force that is colored GREEN:

• Friction

• Natural

• Applied

• Gravitational

Tags

NGSS.MS-PS2-2

Use this Free Body Diagram to answer the question: This is a Free Body Diagram of a laptop on a table being pushed to the right with acceleration. Name the force that is colored GREEN:

• Friction

• Natural

• Applied

• Gravitational

Tags

NGSS.MS-PS2-2

Draw a free body diagram for a car moving at a constant velocity on a straight road. Which forces should be included?

• Only gravitational force

• Gravitational force and normal force

• Gravitational force, normal force, and frictional force

• Gravitational force, normal force, frictional force, and applied force

Tags

DOK Level 2: Skill/Concept

Name the missing force...

• weight force

• normal force

• applied force

• frictional force

Tags

NGSS.MS-PS2-4

If this object were moving to the right, the left-arrow in this diagram would most likely represent:

• gravity

• normal

• a push or pull

• friction

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2