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1

Inertia

matter it it's state of rest/motion, unless changed by an external force

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2

Friction

Tension between 2 things

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3

Mass

quantitive measure of inertia/fundamental property of matter

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4

Natural motion

objects moving naturally / ex: wind, a rock falling, etc...

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5

Violent motion

requires external force / ex: pushing a mass

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6

Scalers

quantities described by magnitude

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7

vectors

quantity that has both magnitude and direction

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8

mechanical equilibrium

a state where the sum of all forces acting on an object of interest is zero

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9

force of tension

pulling on some sort of rope or string, always hanging from above / hanging from something

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10

force of gravity

same thing as force of weight

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11

normal force

support force

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12

applied force

doesn't matter what direction, applying force to an object to make it move.

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13

static equilibrium

when an object is at rest

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14

dynamic equilibrium

when an object is in motion

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15

aristotle

he found natural and violent motion

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16

copernicus

he found that the sun was the center of the universe, but didn't share bc he didn't want to get executed

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17

galileo

demolished aristotle's assertions in the 1500's. he found different objects of different weight fall to the ground at the same rate in the absence of air resistance.

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18

newton

he created inertia, found that objects naturally want to stay at rest already if in rest and motion already if in motion

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