4ESO Física i Química : ARTICLE 129 : FRICTION FORCES AND NEWTON'S LAWS. Work to be done at the watch hours next week.

   - Next week, during the watch hours (horas de guardia) you will have to do the following tasks. Pay attention to them because they consist in a very important concept (friction).

  - TASK 1 :  Watch the following videos in order to remember the most important concepts about Newton’s laws we have already studied and after that watch the videos about friction because later you will try to achieve a few exercise with a friction force involved :

   - Video about Newton’s laws.

   - Video 1 about Friction forces.

   - Video 2 about Friction forces.

   - Video 3 about Friction forces.

   - Video 1 of a friction force excercise.   (Pay attention when watching this video!!)

   - Video 2 about friction force exercise.

   - TASK 2 :   * Because this friction force exercises are not the easiest at all, I’m gonna post for you a few videos in spanish in order to get them well understood :

- Video 1 en español para acabar de entender bien los ejercicios con fuerza de fricción.

- Video 2 en español para acabar de entender bien los ejercicios con fuerza de fricción.

- Video 3 en español con un ejercicio también de fuerza de fricción (nivel bachillerato).

   - TASK 3 :  Read very carefully pages 63, 64 and 65 of your book about friction.

                                Look up and read carefully the examples done there on this pages.

   - TASK 4 :   - Do the exercises  10, 11, 12, 13 and 14  from pages  63, 64 and 65  of your book.