Forces Flashcard Per 4

Front

What is Newton's 1st 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 2nd 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).

Front

What is Newton's 3rd Law of Motion?

Back

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

Front

What is inertia?

Back

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

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's 2nd Law, force equals mass times acceleration (F = ma).

Front

What is an example of balanced forces?

Back

A book resting on a table experiences balanced forces: the force of gravity pulling it down and the normal force from the table pushing it up.

Front

What happens when unbalanced forces act on an object?

Back

The object will accelerate in the direction of the net force.

Front

What is the action-reaction pair when a rocket launches?

Back

The rocket pushes down on the ground (action), and the ground pushes the rocket upward (reaction).

Front

What is the concept of net force?

Back

Net force is the vector sum of all the forces acting on an object.

Front

What is an example of Newton's 3rd Law in everyday life?

Back

When you jump off a small boat, you push the boat backward as you move forward.