Forces.

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Presentation transcript:

Forces

2 Important Points What is mass? What is force? The AMOUNT of matter making up things Certain things weigh more than others although they take up the same space What is force? Force is the strength of the object to move in a certain direction It is basically an object (with mass) with acceleration Example: Skydiving You speed up. Air underneath you can’t push back enough to keep you in the air. Gravity wins. Adapted from the Wikimedia Commons file “Tandemskydive.png“http://upload.wikimedia.org/wikipedia/commons/2/2c/Tandemskydive.png

Another Example Lifting up on something heavy Like a table The table wins. Force of the table’s weight pushes down and you can’t lift up with enough force to get it off the ground. Adapted from the Wikimedia Commons file “Force_examples.svg“http://en.wikipedia.org/wiki/File:Force_examples.svg

How Does this Apply to Math? Lift Has an equation Weight Also has an equation (Force=mass * gravity) Drag Has an Equation Thrust THEY ARE SYSTEMS Opposing equations are set equal to each other to solve for (as an example): The LIFT needed to overcome the WEIGHT of the plane! Adapted from the Wikimedia Commons file “Aeroforces.svg“http://en.wikipedia.org/wiki/File:Aeroforces.svg

How Does this Apply to Math? Lift Has an equation Weight Also has an equation (Force=mass * gravity) Drag Has an Equation Thrust THEY ARE SYSTEMS Opposing equations are set equal to each other to solve for (as an example): The LIFT needed to overcome the WEIGHT of the plane! During this process, you solve for variables! FORCE OF LIFT Adapted from the Wikimedia Commons file “Boeing_747-8_N747EX_First_Flight.jpg“http://en.wikipedia.org/wiki/File:Boeing_747-8_N747EX_First_Flight.jpg WEIGHT