sexygirl813274
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Cliff Heindel
- Posts: 190
- Joined: Wed Oct 13, 2004 12:57 pm
In modern physics, inertia is the property of an object which resists changes in the object's motion. For example, it is difficult to push a car even on level ground and in the absence of friction; it is equally difficult to stop it once it is moving. This is conceptually independent of the weight of the car, with which it is often confused.
Gravitational mass is the property of an object which connects to a gravity field, much as the charge on an object couples to an electric field. We might distinguish two kinds of gravitational mass, active and passive. The active gravitational mass is the source of the object's gravitational field, while the passive gravitational mass responds to it. Objects with a lot of gravitational mass respond strongly to gravity and are consequently very heavy. The force due to gravity on a heavy object is called its weight, which depends on the local gravity field and its gravitational mass. How fast the object falls, or accelerates, under the force of gravity depends on the ratio of its weight to its inertia, which resists any change in motion
Gravitational mass is the property of an object which connects to a gravity field, much as the charge on an object couples to an electric field. We might distinguish two kinds of gravitational mass, active and passive. The active gravitational mass is the source of the object's gravitational field, while the passive gravitational mass responds to it. Objects with a lot of gravitational mass respond strongly to gravity and are consequently very heavy. The force due to gravity on a heavy object is called its weight, which depends on the local gravity field and its gravitational mass. How fast the object falls, or accelerates, under the force of gravity depends on the ratio of its weight to its inertia, which resists any change in motion
Grip it and Rip it!