Newton

1
Newtons Laws of Motion
2
1st Law

• A body at rest will remain at rest and a body in
  motion will remain in a straight line motion
  unless acted upon by an outside force.
• Called inertia

3
Two examples
4
2nd Law

• Force mass x acceleration

5
3rd Law

• For every action there is an opposite and equal
  reaction

6
Universal Law of Gravitation

• "Every particle in the universe attracts every
  other particle in the universe with a force that
  is proportional to the product of the masses and
  inversely proportional to the square of the
  distance between the particles.

7
Why does 1 object stay in orbit around another?

• There is gravitational attraction between the 2
  objects balanced with inertia