Forces, Friction, and Newton's Laws

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, acting in the opposite direction to the applied force.

Front

What are the types of friction?

Back

The main types of friction are static friction, sliding (kinetic) friction, and rolling friction.

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 (kinetic) friction?

Back

Sliding friction is the force that opposes the motion of two surfaces sliding past each other.

Front

What is rolling friction?

Back

Rolling friction is the force that opposes the motion of an object rolling over a surface.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion at a constant velocity unless acted upon by an unbalanced force.

Front

What is Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes a change in the motion of an object, resulting in acceleration.

Front

What is a balanced force?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.