Presentation na ma ecinematia
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Transcript of Presentation na ma ecinematia
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CinemáticaMARIA HUARANCA
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Title
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Arístoteles
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Copernico
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Galileo
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Issac Newton
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Sistema de coordenadas cartesianas
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desplazamiento
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Desplazamiento
• http://www.educaplus.org/movi/2_4distancia.html
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Rapidez media
• La rapidez media de un cuerpo es la relación entre la distancia que recorre y el tiempo que tarda en recorrerla. Si la rapidez media de un coche es 80 km/h, esto quiere decir que el coche coche recorre una distancia de 80 km en cada hora.
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velocidad
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MRUEl movimiento rectilíneo uniforme es aquel cuya
trayectoria es una recta y su velocidad es constante.
Al dar valor 0 a la aceleración, las ecuaciones del principio quedan así:
• e = vo·t vf = vo
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MRU• http://www.educa.madrid.org/cms_tools/files
/e1b91146-9266-4c12-8433-dc20d7466c9f/movimiento_rectilneo_uniforme.html
• http://fem.um.es/Fislets/CD/II1Mecanica/II01Cinematica1D/default.html
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• http://fem.um.es/Fislets/CD/II1Mecanica/II01Cinematica1D/default.html
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Movimiento variado
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MOVIMIENTO RECTILÍNEO UNIFORMEMENTE VARIADO
un cuerpo lleva un movimiento rectilíneo uniformemente acelerado si su trayectoria es una línea recta y se mueve con aceleración constante.
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Ecuaciones• e = eo + vo·t + ½·a·t²
vf = vo + a·t
Si V0= 0• e = ½·a·t² vf = a·t
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Gráficas de movimiento variado• http://www.educaplus.org/movi/3_2graficas.
html• http://www.xtec.cat/~ocasella/applets/2mobi
ls/appletsol2.htm• http://www.walter-fendt.de/ph14s/
acceleration_s.htm
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Caida libre
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Definición• La caída libre y el tiro vertical en el vacío, son
dos casos particulares de M.R.U.V. puesto que en ellos la aceleración es constante : es la llamada aceleración de la gravedad (g = 9,8 m/s2).
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sims• http://www.xtec.cat/~ocasella/applets/
caiguda/appletsol2.htm• http://www.sc.ehu.es/sbweb/fisica/
cinematica/graves/graves.htm#actividades• http://www.dav.sceu.frba.utn.edu.ar/
homovidens/fatela/proyecto_final/2pag2.htm
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autoevaluación• http://www.educa.madrid.org/cms_tools/
files/e1b91146-9266-4c12-8433-dc20d7466c9f/actividades1.html