Force We will consider two kinds of forces Field Forces(Non-Contact): (action through"empty space Moon and earth Gravity Electricity Contact force: (physical contact between objects) This is the most familiar kind Kicking a ball I push on the desk The ground pushes on the chair On a microscopic level, all forces are non-contact Physics 121: Lecture 3, Pg 11Physics 121: Lecture 3, Pg 11 Force … We will consider two kinds of forces Field Forces (Non-Contact): (action through “empty” space) Moon and Earth Gravity Electricity Contact force: (physical contact between objects) This is the most familiar kind. Kicking a ball I push on the desk. The ground pushes on the chair... On a microscopic level, all forces are non-contact