Force and Motion

Front

The motion of a falling object when the only force acting on it is gravity.

Back

Free fall is the motion of an object under the influence of gravitational force only, without any air resistance.

Front

The amount of matter in an object.

Back

Mass is a measure of the amount of matter in an object, typically measured in kilograms or grams.

Front

Forces that produce a nonzero net force, which changes an object's motion.

Back

Unbalanced forces are forces that cause an object to accelerate, decelerate, or change direction.

Front

The resistance that one surface or object encounters when moving over another.

Back

Friction is a force that opposes the relative motion of two surfaces in contact.

Front

A push or pull exerted on an object.

Back

Force is an interaction that causes an object to change its velocity, which can be a change in speed or direction.

Front

The force of gravity acting on an object.

Back

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

Front

The tendency of an object to resist changes in its state of motion.

Back

Inertia is the property of matter that causes it to remain at rest or in uniform motion unless acted upon by an external force.

Front

The rate at which an object changes its position.

Back

Velocity is a vector quantity that refers to the speed of an object in a given direction.

Front

The force that acts on an object moving through a fluid, opposing its motion.

Back

Air resistance is a type of friction that acts against the motion of an object moving through air.

Front

The force that keeps an object moving in a circular path.

Back

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