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Práctica completa cinemática 4ESO

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18 ejercicios resueltos de cinemática.

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PROBLEMAS DE CINEMÁTICA

1. Un coche de policía persigue a una moto que se ha saltado una señal de stop. El coche
circula a 35 m/s, y la moto, a 31 m/s. Si la policía pasa por el stop 8 s después de la moto:
a) ¿Cuánto tiempo tarda en alcanzarla?
b) ¿Qué distancia recorren?




2. Un buen atleta de 100 metros lisos puede llegar a alcanzar una velocidad media de 10
m/s.
a) ¿Qué tiempo tardará en recorrer los 100 m?




b) ¿Cuál será el valor de la velocidad si se expresa en km/h?




c) Si la velocidad del atleta durante la mayor parte del recorrido es muy cercana a los 10
m/s, ¿crees que la gráfica de la velocidad frente al tiempo es una línea recta
horizontal? Justifica la respuesta.




d) De las dos gráficas que ves a continuación, ¿cuál es posible que se ajuste al movimiento?




e) ¿Cómo es la trayectoria que sigue el atleta? ¿Cómo llamamos a ese movimiento?




3. Un móvil se desplaza según la ecuación s = 5 + 6t − t2, en la que las magnitudes vienen
dadas en el sistema internacional de unidades.

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Institution
Secondary school
Study
ESO
Course
School year
4

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Uploaded on
February 15, 2026
Number of pages
8
Written in
2025/2026
Type
Class notes
Professor(s)
Javier losa
Contains
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