Force and Motion #5

Front

What is force?

Back

A push or pull on an object that can cause it to move, stop, or change direction.

Front

What is motion?

Back

The change in position of an object over time.

Front

What is mass?

Back

The amount of matter in an object, usually measured in grams or kilograms.

Front

How does mass affect motion?

Back

More mass means more force is needed to change its motion.

Front

What is friction?

Back

A force that opposes motion between two surfaces in contact.

Front

How can you reduce friction?

Back

By using lubricants like oil or by smoothing surfaces.

Front

What is acceleration?

Back

The rate at which an object changes its velocity.

Front

What is the relationship between force and acceleration?

Back

More force results in greater acceleration, according to Newton's second law.

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.