Science Study Guide Flashcards

0
Q

Action Force

A

the force that is exerted on an object

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1
Q

Acceleration

A

The rate at which velocity changes over time

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2
Q

Gravity

A

the force that objects exert on each other because of their masses

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3
Q

balanced force

A

both forces are exerted on one object

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4
Q

Buoyant force

A

the upward force on objects in a liquid

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5
Q

centripetal force

A

any force that keeps an object moving in a circle

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6
Q

direction

A

the way an object moves ( factor of velocity )

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7
Q

force

A

a push or pull

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8
Q

friction

A

a force that resists the motion between two surfaces in contact

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9
Q

Inertia

A

the resistance of an object to move

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10
Q

mass

A

a measure of how much matter an object is made of

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11
Q

momentum

A

a measure of mass in motion, product of its mass and velocity

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12
Q

motion

A

a change of position over time

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13
Q

position

A

an objects location

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14
Q

reference point

A

a location to which another location is compared

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15
Q

relative motion

A

the motion the viewer sees depending on their motion

16
Q

speed

A

measure of how fast something move through a distance over a time period

17
Q

unbalance force

A

changes the motion of an object

18
Q

velocity

A

a speed in a specific direction

19
Q

weight

A

the force of gravity on an object

20
Q

speed =

A

distance divided by time

21
Q

acceleration =

A

final velocity minus Inital velocity divided by time

22
Q

force =

A

mass times acceleration

23
Q

units of measure for speed

A

m/s or km/h

24
units of measure for distance
kilometers or meters
25
units of measure for acceleration
m/s 2
26
units of measure for time
seconds or hours
27
units of measure for force
n=newtons
28
Newtons 1 law
an object at rest stays at rest, an object In motion stays in motion until a unbalanced force acts upon it
29
newtons 2 law
force= mass times acceleration
30
newtons 3 law
every action has an equal and opposite reaction
31
difference between action/reaction force pairs and balanced/unbalanced forces
action/reaction= needs 2 objects and equal and opposite reactions balanced/unbalanced forces= needs 1 object and equal or unequal forces