ISN (Interactive Student Notebook) Notes
1st- Must have an up to date table of concepts. This means that it must match, exactly to the teacher's notebook. *A T.O.C. is useless with no information on it.
2nd- Must be legible. If I can't read it it will effect your grade.
3rd- Rubric for grading the ISN.
30 points for neatness, 40 points for content, and 30 points for table of concepts.
4th- flip and shake test (nothing falls out= pass, something falls out= fail)
Friction and Gravity Notes
Friction- 1 a : the rubbing of one body against another b : the force that resists relative motion between two bodies in contact
Gravity- The force that attracts two bodies together. ie. moon and Earth
Important characteristics about friction:
- When two objects rub against one another they create friction. This makes the objects loose energy to the force of friction. We can see this by rubbing our hands together, the heat that is created is actually the energy that is being lost to friction.
- When moving an object across a surface you must overcome the force of friction to create movement. If there isn't enough friction an object may not be able to be moved, or if there is too much friction an object will need more force to move.
Important characteristics about gravity:
- Gravity is why objects fall to the ground.
- The force of gravity also creates the weight of an object. (weight and mass are different measurements!) The weight of an object will effect how it moves. The more it weighs the more force it takes to move the object.
- Here on Earth the gravitational pull is 9.8 m/s2.
We represent these two forces by: Ff = Force of friction, Fg = Force of gravity
Forces- 1 a (1) : strength or energy exerted or brought to bear : cause of motion or change : active power
Force diagrams- These illustrations use arrows to show direction of a force and how strong a force is. Direction is shown with the arrow, and the magnitude is shown by the length of the line (longer= increased magnitude).
Everything contains a force.
- A boulder sitting has the foce of gravity holding it in place, and friction witht he ground.
- A moving object, like an ice skater, has many forces. Friction between the ice and skate blade (even though small it is still there), force the skater exerts towards the ground to push off, gravtiy pushing down, and air resistance on the skater.
Newton's Three Laws Notes
It is suggested that you leave room in between each law for examples from the videos.
- Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.
- The relationship between an object's mass m, its acceleration a, and the applied force F is F = ma. Acceleration and force are vectors (as indicated by their symbols being displayed in slant bold font); in this law the direction of the force vector is the same as the direction of the acceleration vector.
- For every action there is an equal and opposite reaction.