Hendley - Friction Lesson

Hendley - Friction Lesson

Physical Science - Mr. Hendley

​Friction

​Friction is a force that opposes motion.

​

​Friction always occurs at the point of contact between two object.

​Static Friction

• ​Static Friction acts on objects that are NOT moving.

• ​Like all friction forces, it acts opposite to the direction of motion.

​Sliding Friction

• ​​Sliding Friction acts on objects that ARE moving.

• ​Like all friction forces, it acts opposite to the direction of motion.

​Rolling Friction

• ​​Rolling Friction acts on objects that are rolling, caused by the change in shape at the point of contact.

• ​Because the point of contact is so much smaller, it can be 10 to 100 times smaller than other friction forces.

• ​Like all friction forces, it acts opposite to the direction of motion.

​Fluid Friction

• ​​Fluid Friction acts on objects that are moving within a fluid.

• ​Fluids are any matter that flows, including liquids and gases.

• ​Air Resistance is a type of fluid friction impacting objects moving in the air.

• ​Like all friction forces, it acts opposite to the direction of motion.

Multiple Choice

Identify the friction

• Static

• Sliding

• Rolling

• Fluid

Multiple Choice

Identify the friction

• Static

• Sliding

• Rolling

• Fluid

Multiple Choice

Identify the friction

• Static

• Sliding

• Rolling

• Fluid

Multiple Choice

Identify the friction (guy in front of truck)

• Static

• Sliding

• Rolling

• Fluid

Multiple Choice

Identify the friction (truck)

• Static

• Sliding

• Rolling

• Fluid

Multiple Choice

Identify the friction of the cat and dog.

• Static

• Sliding

• Rolling

• Fluid

Multiple Choice

Identify the friction of the cups.

• Static

• Sliding

• Rolling

• Fluid

Multiple Choice

Identify the friction shown.

• Static

• Sliding

• Rolling

• Fluid

Multiple Choice

Identify the friction shown.

• Static

• Sliding

• Rolling

• Fluid