village+idiots+and+iblush

toc =Definitions=

Circular Motion - The movement of an object at constant speed around a circle with fixed radius
Axis- Straight line around which rotation takes place

Rotation- object turns around an internal axis

Revolution- object turns around an external axis

Static friction force- opposite in direction to your force, and equal in size

Kinetic friction force- is the force exerted on one surface by the other when the surfaces are in relative motion

Coulomb's law-the relationship among electrical forces, charges, and distance

Electric field- a vector quantity that relates the force exerted on a change to the size of the charge

Grounding- touching a body to earth to eliminate excess charge

=Explanations=

The axis is which a straight line around which rotation takes place.
Rotational Speed is - liner speed-distance/time Tangential Speed is - speed along a circular path Rotational speed is - number of rotations per unit of time.

The Tangential speed is (V) The Centripetal Acceleration is (Ac=V2/r) Rotational Speed (w) The Revolutions is Distance/Circumference

Universal Gravitation
The gravitational forces were responsible for the acceleration of objects on the moon and the earth. Newtons law applies to all objects! Fgrav=Gm,ma/d2 As the distance seperating two objects increases, the force is smaller.

Acceleration


Acceleration is the change in velocity over time. Average acceleration (a avg) = (Change in velocity/Time Spent)

Momentum
Property of moving objects, describe how hard it will be to stop. momentum (p) - inertia in motion mass x velocity p=mv measured in kgxm/s

Impulse product of the average net force exerted on an object and the time interval over which the force acts. fxt = impulse (j) impulses are measured in nxs impulse, momentum, theorem Impulse of a object is equal to the change in momentum it causes fxt = mv2 - mv1media type="custom" key="7702829"

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