## 2-1: The 1ST Law of Motion

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##### Created by:

laurenetay  on August 22, 2011

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# 2-1: The 1ST Law of Motion

 type of changeRegardless of the ______________, something moves when change occurs.
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#### Definitions

type of change Regardless of the ______________, something moves when change occurs.
If something changed ____________________, it or some part of it moved.
create motion A force of some kind is necessary to _____________.
sustain motion Force is not necessary to ______________ if we can get rid of other forces, like friction.
Newton's 1st Law Every object at rest, or in uniform motion, will remain in that state unless compelled to do otherwise by forces acting upon it.
uniform motion motion at constant speed in a straight line (also: unaccelerated motion).
Force A push or pull.
State of Uniform Motion The condition of an object when no unbalanced forces act upon it. A state of motion always refers to being at rest or in uniform motion.
may not be obvious The First Law __________________ because the objects we deal with in everyday life are not free from the influence of forces, like gravity and friction.
state of rest The _____________ is simply the special case of uniform motion when the speed is zero.
Velocity The speed in a particular direction of a moving body. Speed + direction.
Acceleration Rate of change of velocity per unit time, or change of velocity divided by the time required for the change. Speed + direction OVER time.
Centripetal Toward a center.

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100% correct by laurenetay