Forces and Motion

Front

What is a balanced force?

Back

A balanced force has no net force acting on an object.

Front

What is an unbalanced force?

Back

An unbalanced force results in a net force acting on an object, causing it to accelerate.

Front

If you push on a tree with 20 N of force and it doesn't move, how much force is the tree pushing back on you?

Back

The tree is pushing back on you with 20 N of force.

Front

What happens when two forces act in the same direction?

Back

Their strengths are added together.

Front

What is friction?

Back

Friction is a force that opposes motion between any surfaces that are touching.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

What is net force?

Back

Net force is the overall force acting on an object when all the individual forces are combined.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

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).