| Term | Definition |
| Inertia | An object's ability to resist change in its state of motion |
| Force | A push or pull or another outside affect that acts on an object.
Equation- F=ma
Unit - kgm/s/s = Newtons, N |
| Friction | A non-conservative force that acts in the opposite direction of the objects motion.
Friction always reduces Net Force. |
| Momentum | An object's ability to resist change in motion.
Object's have momentum only when they are moving. |
| Mass | How much matter an object contains. *The total number of atoms an object has.
This does not change based upon location. |
| Weight | An object's force due to gravity. The object's mass x gravity.
This changes depending upon the location of an object. |
| Gravity | A form of acceleration based upon the MASS of an object.
Acceleration due to gravity on Earth = -9.8m/s/s. |
| Newton's 1st Law | **Known as the Law of INERTIA**
An object will maintain its state of motion unless an outside net force acts on the object. |
| Newton's 2nd Law | **Known as the Law of PROPORTIONS**
An object's acceleration is directly proportional to the force acting on the object and inversely proportional to the mass of the object.
As MASS inc. ACCELERATION decr.
As FORCE inc. ACCELERATION inc. |
| Newton's 3rd Law | **Known as the ACTION/REACTION**
For every force there is another force equal in magnitude and opposite in direction.
**ONE OBJECT MAY NOT EXERT ANY MORE FORCE THAN ANOTHER OBJECT CAN WITHSTAND** |
| Static Equilibrium | Net Forces on an object are = 0, zero Newtons AND the object is at rest. |
| Dynamic Equilibrium | Net Force on an object are = 0, zero Newtons AND the object is in motion.
**Think cruise control** |
| Collisions | When two or more objects interact with one another exerting equal forces upon one another. |
| Net Forces | The addition of all forces acting on an object. Generally done in one dimension.
Equation: ∑F= F1 + F2 + Fn
Unit: N, Newtons |
| Conservation of Momentum and Energy | Interactions with objects will result in momentum and energy being conserved within a system. Energy and momentum may be lost by individual objects but the conservation can be tracked within the system. |
| Free Fall | An object moving in the Y-Axis falls without any opposing force as it falls. NO FRICTION. |
| Free Body Diagrams | An image that outlines and describes all the forces acting on a system.
Fn= Force Normal/support force (Always up)
W = weight (Always down) m*g
Fg= Force due to gravity
Ff= Force of friction
Fdrag = Force of air resistance
Fa = Force applied |
