Physics

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Author:
julidei
ID:
6578
Filename:
Physics
Updated:
2010-02-10 15:54:51
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Physics ch 1
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ch 1
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  1. Inertia
    The property of things to resist changes in motion.
  2. Mass
    The quantity of matter in an object. More specifically, it is the measure of the inertia or sluggisshness that an object exhibits in response to any effort made to start it, stop it, deflect it, or change its state of motion in any way.
  3. Kilogram
    The unit of mass. One kilogram (kg) is the mass of 1 liter (L) of water at 4 degrees C
  4. Weight
    Simply stated, the force due to gravityon an object. More specifically, the gravitational force with which a body presses against a supporting surface.
  5. Force
    Simply stated, a push or pull
  6. Newton
    The scientific unit of force
  7. Net Force
    The combination of all forces that act on an object.
  8. Vector Quantity
    A quantity that specifies direction as well as magnitude.
  9. Support Force
    The force that supports an object against gravity, often called the normal force.
  10. Equilibrium Rule
    The vector sum of forces acting on a nonaccelerating object equals zero
  11. Friction
    The resistive force that opposes the motion or attempted motion of an object through a fluid or past another object with which it is in contact.
  12. Air Resistance
    The force of friction acting on an object due to its motion through air.
  13. Speed
    The distance traveled per time.
  14. Velocity
    The speed of an object with specification of its direction or motion.
  15. Acceleration
    The rate at which velocity changes with time; the change in velocity may be in magnitude, or in direction, or in both. It is usually measured in m/s squared
  16. Hang Time
    The time that one's feet are off the ground during a vertical jump.

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