It changes when an external force acts upon it.
In theory.
But in fact 'Rest Mass' is the only valid measure of mass of an object. If it is in relative motion with respect to anything else, including an observer, then it can also be assigned "momentum," which is a relative concept. We habitually anthropocentrically assign momentum to things in motion with respect to 'us'.
Consider also a gyroscope. It has momentum when it is spinning, so we say higher 'inertia'. We must eventually revert to the energy / mass relation; E=mc^2.
No, inertia does not change when speed doubles. Inertia is an object's resistance to changes in motion, and it depends on the object's mass, not its speed.
inertia
Inertia measures an object's tendency to resist change in its motion.
Neither. Inertia is not a force.
Inertia in physics is generally defined as resistance to change in velocity and it is measured as a change in momentum. (p is momentum, so change in momentum would be Δp, measured as Δp = m*Δv)
Mass is the measure of inertia and if you change the mass the inertia will change.
Inertia inertia
No, the moment of inertia of an object does not change with a change in its center of mass. The moment of inertia depends on the mass distribution and shape of an object, not its center of mass.
In physics, inertia is an object's resistance to any change in motion, such as a change in velocity.
No, inertia does not change when speed doubles. Inertia is an object's resistance to changes in motion, and it depends on the object's mass, not its speed.
"inertia"
Inertia.
Inertia. Inertia applies to both increases and decreases in velocity.
Inertia is the tendency of all objects to resist change in motion.
inertia
Inertia measures an object's tendency to resist change in its motion.
No, weight change does not influence inertia. Inertia is the property of an object to resist changes in its state of motion, and it depends on the mass of the object, not its weight. Weight is the force of gravity acting on an object and can change depending on the gravitational field, but the object's inertia remains constant as long as its mass does not change.