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15 Cards in this Set

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inertia
a body in motion tends to remain in motion; a body at rest tends to remain at rest; unless acted on by an outside force
position
a specific point in space
distance
the length between two positions
direction
a course on which something is moving
vector quantity
a quantity consisting of both a magnitude and directino
magnitude
tells how much of the quantity there is
velocity
measures how quickly your position changes
speed
the distance you travel in a certain amount of time
Newton's 1st Law of Motion
an object that is not subject to any outside forces moves at a constant velocity, covering equal distances in equal times along a straight-line path
forces
pushes and pulls
mass
the measure of your inertia, your resistance to changes in velocity
acceleration
measures how quickly your velocity changes
Newton's 2nd Law of Motion
the force exerted on an object is equal to the product of that objects mass times its acceleration
inertial frame of reference
a frame of reference that is not accelerating
inertial
moving because of inertia alone and not accelerating