Review of friction, Newton's Laws, Law of Universal Gravitation

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it comes into contact with another surface.

Front

What are the three types of friction?

Back

The three 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 an object that is sliding over a surface.

Front

What is rolling friction?

Back

Rolling friction is the force that opposes the motion of an object that rolls 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 unless acted upon by a net external 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).

Tags

NGSS.MS-PS2-2

Front

What is Newton's Third Law of Motion?

Back

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

Tags

NGSS.MS-PS2-1

Front

What is the Law of Universal Gravitation?

Back

The Law of Universal Gravitation states that every mass attracts every other mass with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Front

What is air resistance?

Back

Air resistance is a type of friction that acts against the motion of an object moving through the air.

Tags

NGSS.MS-PS3-5