Negative mass

Definition

Negative mass is a hypothetical concept where mass is assigned a negative value instead of positive. In this scenario, objects with negative mass would exhibit unusual behaviors such as moving opposite to applied forces.

Related terms

Mass:

A measure of the amount of matter in an object. Unlike negative mass, regular mass is always positive.

Weightlessness: A condition experienced when there is no apparent gravitational force acting on an object or person.

Newton's Third Law of Motion:

States that for every action, there is an equal and opposite reaction. Negative mass could potentially challenge this law since it would involve reversed reactions.