intro to physics

Descrição

crash course
S.stone
FlashCards por S.stone, atualizado more than 1 year ago
S.stone
Criado por S.stone mais de 9 anos atrás
115
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Resumo de Recurso

Questão Responda
physics is a type of __________ science physical
physics study of matter and energy and how they interact with each other
forms of energy motion,light,electricity,radiation,gravity, magnetism,and heat
how is physics such a broad field of science it studies the smallest particles within particles the largest things such as rte expansion of space and everything in the middle
fact a statement established by an experiment or observation. all facts are true under specific conditions. some facts may be false when re-tested with better instruments
belief not scientifically supported in the some way facts,laws,and hypothesis are.cant be tested using the scientific method
hypothesis can be tested by a direct experiment or observation. will be supported or rejected and can led to a new hypothesis
law V.S. theory law-logical relationship between 2 or more things based on a variety of facts theory-best possible exclamation for patterns we observe in nature tested over and over to determine their accuracy
every thing in the universe ________. motion is a part of_________ mechanics over the years scientists have discovered rues or laws moves,classical
the physics of motion is all about force
force equation acceleration mass F=MA M/S2 Kg
speed describes how something is moving
velocity described how fast something is moving with a direction
acceleration describes increase or decrease in velocity
force is measured in newtons
foces are vectors meaning they give a number value and a direction
F= M= A= F=MA M=F/A A=F/M
isaac newton developed laws of physics and calculus at the same time
enertia an object will stay at rest or in motion until another force acts upon it
action for every action there is an equal and opposite reaction
if u apply a force to an object u might change its energy
energy is measured in jouls
kinetic energy is moving transferred from potential to kinetic
potential energy may or may not be moving stored energy have PE due to height and gravity
friction a force that holds back the movement of sliding object opposite direction only with solid gas or liquid called resistance
force of attraction gravitational forces are forces f attraction the earth produces the same acceleration on every object
work is done when a force is applied t an object and it moves
work force distance w=fd J or mn m n

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