_________ is friction between a moving object and air particles.

A non-contact force of attraction that that exists between any two objects

This is a non-contact force that acts at a distance and cannot be seen. Materials that create this force are said to be magnetic.

_______________ are forces that are not equal in size and/or direction and produce a change in motion of an object,

This is how much matter is in an object.

____________Is the size of an object's surface.

What kind of force requires two pieces of matter to touch?

a push or a pull that can make things move faster, slower, stop, or change direction

________ is a contact force that acts against motion and slows down moving objects.

This is the speed of an object or how fast or slow an object is moving

What is a lubricant?

How a surface feels is it's ____________

The course or path that an object is moving

the measure of how fast an object is moving

Balanced forces...

_________ is a change in an object's position.

A____________________ acts at a distance.

What non-contact force causes tides to rise and fall?

Motor oil in a vehicle keeps the parts of the engine moving freely. Motor oil is an example of a(n) ____________.