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Force, Mass, and Weight

Mass is an indication of how much matter is present. The more matter, the more mass. (We may think of matter in any size, as bricks, molecules, atoms, nucleons, quarks, etc.) Mass is also an indicator of how hard it is to get some amount of matter moving or how hard it is to stop the matter once it is moving. We can all stop a baseball moving at 50 ft/s (15.2 m/s) and suffer little more damage than a possible sore hand. If we step in front of an automobile moving at that speed, we will certainly be killed. The automobile has much more mass it is much harder to stop. [Pg.18]

Weight is a force. It is the force that a body exerts due to the acceleration of gravity. When there is no gravity, there is no weight (e.g., in earth satellites there is no apparent gravity this state is referred to as weightlessness). [Pg.18]


See other pages where Force, Mass, and Weight is mentioned: [Pg.372]    [Pg.18]    [Pg.18]   


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