Chapter 13 - Forces
Stuff you should learn this chapter
  • Force
  • it is a force between two objects
  • it can push or pull (it always has a direction)
  • it is measured in Newtons
  • it causes a change in the velocity of objects\ (acceleration)
  • There are 4 fundamental forces
  • Strong force - Holds protons together in the nucleus
  • Electromagnetic Force - between charged particles
  • Weak Force - Holds the particles that make neutrons & protons
  • Gravity - a force of attraction between all matter in the universe
( Friction comes from the electromagnetic force.)