Forces and Friction Flashcard Re-take

Front

What is fluid friction?

Back

Fluid friction is the resistance encountered by an object moving through a fluid (liquid or gas). It opposes the motion of the object.

Front

What type of friction occurs when an object rolls over a surface?

Back

Rolling friction occurs when an object rolls over a surface, such as a wheel on a road.

Front

What is static friction?

Back

Static friction is the force that keeps an object at rest and prevents it from starting to move.

Front

What is sliding friction?

Back

Sliding friction is the resistance encountered when an object slides over a surface.

Front

How can friction be reduced?

Back

Friction can be reduced by making surfaces smoother, using lubricants, or changing from sliding to rolling friction.

Front

What is the net force?

Back

Net force is the total force acting on an object, calculated by adding all the individual forces together, taking their directions into account.

Front

What is the role of lubricants in friction?

Back

Lubricants, such as oils and greases, reduce friction between surfaces in contact, allowing for smoother motion.

Front

What is the difference between static and kinetic friction?

Back

Static friction acts on objects at rest, while kinetic (or sliding) friction acts on objects in motion.

Front

What is an example of fluid friction?

Back

An example of fluid friction is the resistance a swimmer feels while moving through water.

Front

What happens to friction when surfaces are made smoother?

Back

When surfaces are made smoother, the amount of friction between them decreases.