Forces and Newton's Laws of Motion

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 with the same speed and in the same direction unless acted upon by an unbalanced force.

Front

What does it mean for forces to be balanced?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its motion, either by starting to move, stopping, or changing direction.

Front

What is the definition of net force?

Back

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

Front

If the net force on an object is 0 N, what can we conclude about the object's motion?

Back

The object is either at rest or moving at a constant velocity.

Front

What is the formula for calculating net force?

Back

Net Force = Total Forces in One Direction - Total Forces in the Opposite Direction.

Front

What is an example of a contact force?

Back

Friction is an example of a contact force that opposes the motion of an object.

Front

What is gravitational force?

Back

Gravitational force is the attraction between two masses, such as the Earth and an object.

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 inertia?

Back

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