Force & Motion Vocab

Front

What is Newton's 1st Law of Motion?

Back

An object at rest will remain at rest, and an object moving at a constant velocity will continue moving at a constant velocity, unless acted upon by an unbalanced force.

Front

What is friction?

Back

The force that one surface exerts on another when the two surfaces rub against each other.

Front

What are balanced forces?

Back

Equal forces acting on an object in opposite directions.

Front

What is rolling friction?

Back

Friction that occurs when an object rolls over a surface.

Front

What is sliding friction?

Back

Friction that occurs when one solid surface slides over another.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What is gravity?

Back

The force that attracts two bodies toward each other, commonly experienced as the force that pulls objects toward the Earth.

Front

What is unbalanced force?

Back

Forces that are not equal in size and opposite in direction, causing a change in motion.

Front

What is momentum?

Back

The quantity of motion an object has, calculated as the product of its mass and velocity.

Front

What is fluid friction?

Back

Friction that occurs when an object moves through a fluid (liquid or gas).