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Newton's
1st Law of Motion
1) A body at rest
remains at rest, a body in motion remains in motion with a constant velocity
(same direction and speed) unless acted on by a net outside force
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Picture a hockey puck on
the ice.
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Friction,
which normally slows things down, can be part of a net
outside force
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Velocity
represents both direction and speed.
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Uniform circular motion:
speed
same but velocity always changing
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