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Physics > Dynamics > Flashcards

Dynamics Flashcards

1
Q

Law of Inertia

“Objects at rest will remain at rest, while objects in motion will remain at motion in a straight line unless an external unbalanced form is acted upon them”

A

Newton’s First Law of Motion

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2
Q

Innate capacity to resist changes in motion

A

Inertia

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3
Q

Sum of all forces

A

Net force

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4
Q

Law of Acceleration

A

Newton’s Second Law of Motion

Fnet=ma

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5
Q

Gravitaional force that acted upon by Earth

A

Weight

W=mg

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6
Q

Newton’s Third Law of Motion

A force acted upon an object will be countered by another force of equal magnitude in the opposite direction

A

Law of Action/Interaction Reaction

A force acted upon an object will be countered by another force of equal magnitude in the opposite direction

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7
Q

Influence an object undergo a change in its state of motion or form

Unit N newtons

A

Force

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8
Q

Fundamental Forces

A

Strong Nuclear Force
Weak Nuclear force
EM Force
Gravitational Force

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9
Q

Attraction between 2 objects

Weakest but infinite range

A

Gravitational force

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10
Q

Responsible for radioactive decay

Interaction between gluons, quarks, and antiquarks

Short range

A

Weak nuclear force

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11
Q

Attraction or repulsikn due to electrical charges

Infinite range

A

Electromagnetic Force

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12
Q

Emergent or Non Fundamental Forces

A

Normal force
Friction
Tension
Elastic
Air resistance

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13
Q

Acted upon another force perpendicullary

A

Normal force

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14
Q

Oppose the object’s motion

Static- acting on stationery objects
Kinetic- acting on kinetic objects

Fmu= coefficient Mu • Fn
Fn-> Normal force

A

Friction

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15
Q

Pulling dorce through string

A

Tension

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16
Q

Reactive force to return an elastic object to original state

F= -k • delta x
K= spring constan
x length of deformation

A

Elastice Force

17
Q

Particles in air resisting or hitting the surface of moving objects

Most noticeable on high speed objects

A

Air resistance

18
Q

Effort to stop a moving object

p=mv

19
Q

Change in momentum

A

I=delta p=Ft
I=m•delta v

20
Q

Objects affect each other and change momentum

*total momentum b4 collision= total momentum after collision

21
Q

Bounce back after collision

Momentum and kinetic energy conserved

Totally Elastic
m1v1+m2v2 = m1v2’+m2v2’

A

Elastic energy

22
Q

Do not bounce back after collision

Kinetic energy is not conserved

totally inelastic
m1v1+m2v2= v’(m1+v1)

A

Inelastic energy

23
Q

Do not bounce back after collision

Kinetic energy is not conserved

A

Inelastic energy

Physics (8 decks)

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