Front

Equal forces acting on an object in opposite directions

Back

Balanced Force: Forces that are equal in size but opposite in direction, resulting in no change in motion.

Front

An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force.

Back

Newton's First Law: Also known as the Law of Inertia, it states that an object will not change its state of motion unless a force acts on it.

Front

The tendency of an object to resist a change in its motion

Back

Inertia: The property of matter that causes it to resist changes in its state of motion.

Front

The amount of matter in an object

Back

Mass: A measure of the amount of matter in an object, typically measured in kilograms.

Front

A measure of the force of gravity on an object

Back

Weight: The force exerted by gravity on an object, calculated as mass times the acceleration due to gravity (W = mg).

Front

The rate of change of velocity of an object

Back

Acceleration: The change in velocity per unit of time, measured in meters per second squared (m/s²).

Front

The force that opposes the motion of two surfaces in contact

Back

Friction: A force that resists the sliding motion of two surfaces that are in contact.

Front

The speed of an object in a given direction

Back

Velocity: A vector quantity that includes both the speed and direction of an object's motion.

Front

The total distance traveled divided by the total time taken

Back

Average Speed: The overall speed of an object, calculated as total distance divided by total time.

Front

The force that causes an object to move in a circular path

Back

Centripetal Force: A force that acts on an object moving in a circular path, directed towards the center of the circle.