Forces

​Free body diagrams (force diagrams)

Some text here about the topic of discussion

Pushes DOWN on everything.​

​

​Some text here about the topic of discussion.

​Gravity (F_g)

​

Draw

Draw an example of gravity acting on something

Normal force is OPPOSITE gravity. It pushes upward from the surface to the object and prevents things from falling through whatever they are resting on.​

​

​Normal Force (F_n)

​

Draw

Draw an example of normal force on an apple sitting on a table.

Note: Draw an arrow in the correct place and facing the correct way to represent the force and label it

Hint: Draw an arrow facing UP and an object sitting on something.

Multiple Choice

Which force pushes things down towards the center of the earth?

• Gravity

• Normal

• Applied

• Friction

Multiple Choice

Which force is opposite gravity and keeps us from falling through everything?

• Gravity

• Normal

• Applied

• Friction

​Forces that are applied by people or other things. The arrow will face the direction of the force being applied.

​

Examples: pushing a box, driving a car, pulling a door.

​

​

​

​

​​Applied force (F_a)

​

​Two surfaces rubbing together create friction. This force is OPPOSITE applied forces.

The arrow will face opposite of the applied force.​

​​Friction (F_f)

​

​

​A diagram that shows the forces on an object is called a free body diagram.

​

Draw the picture below on a paper to use as a reference for the next couple of questions! Or scroll back to this slide if you can.​

​

​

​

​

​Free body diagram

Draw

Draw an example of someone applying a force to something and friction opposing it.

Hint: Applied and friction should have arrows facing each other

Multiple Choice

Hunter is pushing a box, what kind of force is he creating?

• Gravity

• Normal

• Applied

• Friction

Multiple Choice

Hunter's box is sliding on the carpet. What force is opposing the force created by him pushing the box?

• Gravity

• Normal

• Applied

• Friction

Multiple Choice

The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

• normal

• abnormal

• static

• inertia

Multiple Choice

Name the missing force...

• frictional force
• weight force
• thrust
• buoyant force

Multiple Choice

Name the missing force...

• weight force
• normal force
• applied force
• frictional force

Multiple Choice

Name the missing force.

• Normal Force

• Friction Force

• Gravitational Force

• Applied Force