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unit 3 - Coggle Diagram

- - - - forces opposing eachother cancel out, the remaining bigger force moves
        
        an obj has 10N north and 5N south
        
        the obj is gonna move 10-5=5N north (10>5)
      - forces in the same direction combine and add up
    - - the bigger the arrow, the bigger the force
      - always points away from obj of interest
  - - - when you jump out of a plane, gravity pulls you down, the force is weight
    - - when you are being pulled by earth's gravity, the contact force of the floor acts against it completely
    - - when you push a box, the friction of te ground acts against it
    - - a car moves through the air, the engine pushes it forward, air res is acting against it
    - - walking in water is hard and slow, because of drag acting against you
- - - - ex. parachutes increase surface area for air res to affect it, so it slows down falling
    - - at that point, you reached the terminal velocity
      - 2 forces are acting on you at opposite directions, at the same line
- - - - acceleration due to gravity is abt 9.8 m/s^2
  - - - unit: kg
    - - unit: N
      - so if you take an obj to the moon, it will have less weight, because the grav force of the moon is not as big as the earth's
      - weight =mass x accel of free fall
- - - - or f = ma
      - so the heavier the obj/the more the acceleration, the more force is exerted