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Chapter 10 Vocab
Chapter 10 Vocabulary
Term | Definition |
---|---|
Force | A force is described by its magnitude and by the direction in which acts |
Newton | The overall force on an object when all the individual force acting are added together |
Balanced Forces | Balanced Forces acting on an object do not change velocity |
Friction | Two surfaces exert pressure on each other |
Static | Friction that acts on objects that are not moving |
Sliding | Friction that occurs when one solid surface slides over another |
Fluid | A material that can easily flow |
Rolling | Friction that occurs when an object rolls over a surface |
Gravity | Force that pulls objects towards ejo gravity acts everywhere and on everything = law of universal surface |
Mass | The amount of matter in an object |
Weight | The amount of gravity on an object |
Free Fall | Force of gravity alone causes an obj to accelerate |
Air Resistance | Fluid friction of air acts on obj to accelerate |
Elastic Forces | If it returns to its original shape after is squeezed or streched |
Inertia | The tendency of an object to resist any change in its motion |
Momentum | You can calculate the movement of a moving object by multiplying the objects mass and velocity |
Law of Conservation of Momentum | The total momentum of any group of object remains the same |
Net Force | The overall on an object when all the indidual foce acting on eachother |
Satelilite | Anyobject that orbits around another object in space |
Centripetal Force | A force that causes an object to move in a circle |
Compression | An elastic force that squeezes or pushes the molecules in matter together |
Tension | An elastic force that streches or pulls on the molecules in matter |