Inertia is the resistance of a physical object to change in its velocity.

Look up inertia in Wiktionary, the free dictionary.

Inertia may also refer to:

• Moment of inertia, the resistance to angular acceleration
• In mechanical engineering, simply "inertia" is often used to refer to "inertial mass" or "moment of inertia"
• Second moment of area, a geometrical property of a body that determines its resistance to bending
• Thermal inertia or effusivity, the resistance of an object or body to temperature change in response to heat input
• Sylvester's law of inertia, a theorem in matrix algebra
• Sleep inertia, a psychological state
• Climate inertia, a slowness of the Earth system to changes in significant factors such as greenhouse gas levels
• Ecological inertia, the ability of a living system to resist external fluctuations

• Cognitive inertia, resistance to change in an individual's beliefs
• Psychological inertia, a tendency to favor omission over commission due to a lack of incentive to act
• Psychical inertia, a term introduced by Carl Jung
• Social inertia, description of a person's resistance to change in psychology and sociology
• Corporate inertia or unwillingness to change, a diseconomy of scale in microeconomics

• Inertia (film), a 2001 Canadian drama
• Inertia (Marvel Comics), a fictional hero
• Inertia (DC Comics), a fictional antagonist
• "Inertia" (short story), a story by Nancy Kress

Music

• Inertia, an Irish DJ duo, the pairing of John O'Callaghan and Neal Scarborough
• Inertia (The Exies album), an album by The Exies
• Inertia (Derek Sherinian album), an album by Derek Sherinian
• "Inertia" (song), by AJR from the album The Maybe Man
• "Inertia", a song by Blur from the album Leisure
• "Inertia", a song by Bruce Dickinson from the album Skunkworks
• "Inertia", a song by In Hearts Wake from the album Divination
• "Inertia", a song by Insomnium from the album One for Sorrow
• "Inertia", a song by The Wonder Stuff from the album Never Loved Elvis
• "Inertia", a song by 20syl

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