Ch+2+Sec+6+KirnumB

Section 6

What do you see? What do you think? I see a person trying to push on a wall and not being able to move it and the same person pushing himself with much more ease.

If I were telling someone how to jump, I would tell them to bend their knees and push up. With more force, you travel higher.

Physics Talk
 * Acceleration is always accompanied by an unbalanced force
 * Newton's 3rd law of motion: For every applied force, there is an equal and opposite force
 * forces always come in equal and opposite pairs
 * if you push on a wall, the wall pushes on you with the same force
 * When a large mass is placed on a meter stick, it bends
 * Free-body diagram: a diagram showing the forces acting on an object
 * shows the relative strength and direction of all the forces acting on an object in a given situation
 * each force is represented by an arrow
 * the direction of it is the direction of the force
 * they are each labeled
 * Center of mass is the point where all the mass of an object is considered to be concentrated
 * When you stand on the floor, your mass is pulling you down
 * If you push or pull on something, that something pushes or pulls back on you with an equal amount of force in the opposite direction
 * Forces always come in pairs

Checking up
 * 1) Forces are always in pairs, when you push or pull on something, it pushes or pulls back on you
 * 2) Your mass
 * 3) The relative strenght and direction of all forces acting on an object in a given situation

PTG
 * 1) The force on an athlete's had is equal and opposite to the force the hand exerts on the ball. This is true because of Newtons 3rd law.
 * 2) It pushes just enough to keep your weight balanced
 * 3) It measures the push provided by your body
 * 4) It tries to push harder then it can
 * 5) When a big linebacker tackles a small running back, he is applying more of a push then is needed and unbalancing the running back
 * 6) The forces are friction, gravity, and the push
 * 7) Baseball players prefer to wear gloves for catching high speed baseballs because the balls are traveling at very high forces, the glove helps them push back on the ball.
 * 8) a) This boxer wont stand a chance in the ring with "Big Ben." He wont be able to stand the punch of Big Ben!
 * b)