A force is any push or pull on an object.

1
A force is any push or pull on an object.

• The units for force are Newtons (N) they are
  equal to a kg m/s2.
• F ma
• Weight is equal to mass times acceleration of
  gravity.
• Fg mg
• Mass is measured in kg and does not change as
  height changes. Weight does get less as you move
  away from the center of Earth.

2
Isaac Newton

• Newtons 3 laws
• 1st Law of Inertia An object at rest will
  stay at rest, an object in motion will stay in
  motion, unless acted upon by an outside force.
• 2nd F ma An object will accelerate in the
  presence of an unbalanced force. The larger the
  mass the smaller the acceleration.
• 3rd For every action there is an equal and
  opposite reaction.