TASK #3 - Edpuzzle-Types of Friction

Friction is

• the force that opposes the sliding motion of two touching surfaces.

• the force of attraction towards the center of the earth

What is static friction?

• When two objects, in contact with one another, are not in motion.

• When two objects, in contact with one another are moving past one another.

True or false---static friction is friction when things are NOT moving

• True

• False

What is one benefit of static friction?

• Can cause short little electrical shocks when you touch a metal surface.

• Allows objects to remain stationary and motionless.

• Allows objects to move in any direction it chooses.

Name the type of friction that happens when two surfaces slide past one another.

• Static friction

• Sliding friction

• Rolling friction

• Fluid friction

Rolling friction is

• friction that slides

• friction between a rolling object and the surface it rolls on.

• not really friction at all

True or false---rolling friction involves something on wheels or tires

• True

• False

True or false---fluid can include both air and liquid

• True

• False

Which of the following NOT an example of fluid friction?

• A person in a parachute failing to the ground

• Swimming laps at the pool

• Dragging a couch across the carpet

• A steamboat traveling down the river