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540228
Physics
Descrição
Physics 2010 Mapa Mental sobre Physics, criado por steveny em 10-02-2014.
Sem etiquetas
physics 2010
physics 2010
Mapa Mental por
steveny
, atualizado more than 1 year ago
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Criado por
steveny
aproximadamente 10 anos atrás
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Resumo de Recurso
Physics
Chapter 1 - introduction
Dimensions and units
Density
Mass/volume
Mass
Volume
Units of measure
Converting units
SI system
Scientific notation
Trigonometry
Sine - cosine - tangent
Measuring angles
Vectors
Maginitude
C = sqrt(cx^2+cy^2)
Direction
€ = tan^-1(cy/cx)
Chapter 2 - motion forces and newtons laws
Motion
Displacement
Velocity
Speed = distance / time
Acceleration
Change in velocity / change in time
Newtons laws
Law 1 - if an objects force is zero then the object will maintain its velocity forever
Law 2 - the total force on an object is equal to the sum of all forces on the object
A = £F/m
Law 3 - if an object asserts a force on a second object the second object exerts a force of the same magnitude in opposite direction
Chapter 3 - forces and motion in one dimention
Motion with constant nonzero acceleration
Vfx=Vix+a(change in t)
Change in position=Vix(change in t)+1/2a(change in time)squared
Vfx squared=Vix squared+2a(change in time)
Normal Forces and Weight
F=ma
Free Body Diagram
Acceleration and Apparent Weight
ma=+N-mg
N=mg+ma
Adding Friction
Friction=coefficient of kinetic friction X N
Free Fall
a=Fgrav/m=-mg/m=-g
v=v+at=Vo-gt
y=Yo+Vot+1/2at squared=Yo+Vot-1/2gt squared
Cables, Strings, and Pulleys
Tension Forces
T=mg+ma
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