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1 La cantidad de movimiento, es una
magnitud física fundamental de tipo
vectorial que describe el
movimiento de un cuerpo en
cualquier teoría mecánica
2 Fue el propio Newton quien introdujo el concepto de cantidad de movimiento que
combina las magnitudes características de una partícula material en movimiento: --->>>
2.1 MASA
2.1.1 Toda particula material
tiene masa
2.2 VELOCIDAD
2.2.1 magnitud que
caracteriza el
movimiento
2.3 Por tanto, el momento lineal (x), es una magnitud vectorial
(kg m/s), ya que resulta de multiplicar un escalar (la masa en
kg) por un vector (la velocidad, en m/s). Su dirección y sentido
coinciden con los del vector velocidad.
3 Una persona de 64 kg camina por el parque con una velocidad
de 2 m/s. ¿Cuál es la cantidad de movimiento de dicha
persona? Aplicamos la fórmula y reemplazamos los valores:
4 La magnitud que mide la variación del momento lineal de
una partícula, y de la cual depende, se llama impulso.