5. January, 2016

watch:  mac science 3rd law

copy:

• action F is equal to the reaction F, but exerted in opposite directions
• action and reaction F’s are applied to different objects
• example: action F is you pushing on the wall; the reaction F is the wall pushing on you
• you and the wall are two different objects

Watch:  Bozeman Science 3rd law video

• Draw the action/reaction force diagram
• Draw and label all free-body diagrams
• Identify all action and reaction forces
• Question: Since the gravitational pull of the Earth is exerting a force on you why don’t you accelerate down into the center of the earth? Use the 3rd law in words and in a free body diagram to explain your answer.