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Forces Unit Vocab
This is my study stack for the forces unit
Question | Answer |
---|---|
Momentum | The product for an objects mass and its velocity |
Formula for Momentum | m=pv |
Laws of Conservation of Momentum | the total momentum of any group of objects remains the same unless outside forces also act on the object |
Force | a push or pull that gives energy to an object |
Units of Force | forces are measured in Newtons;N |
Net Force | the total of all the forces acting on an object |
Inertia | the tendency of matter to resist a change in its motion |
Balanced Force(s) | the net force acting on an object is zero |
Unbalanced Force(s) | the net force acting on an object is not zero |
Magnitude | the amount (size) of a measurement |
Friction | a force that one surface exerts on another when the two surfaces are in contact with each other |
Static Friction | friction between non-moving objects |
Kinetic Friction | friction between moving objects |
Sliding Friction | friction between objects that slide (rub) against each other |
Rolling Friction | occurs when an object rolls over a surface |
Fluid Friction | occurs when an object moves through a fluid or a gas |
Newton's First Law of Motion | objects at rest will stay at rest and objects in motion will stay in motion at a constant velocity unless acted on by an unbalanced force |
Newton's Second Law of Motion | the net force acting on an object is equal to the product of the object's mass and acceleration |
Newton's Third Law of Motion | for every action force there is a reaction force that is equal, but acts in the opposite direction |
Law of Universal Gravitation | all objects in the universe are attracted to each other; strength of attraction depends on the objects' masses and distance away from each other |
Freefall | the motion of an object when GRAVITY is the only force acting on it |
Terminal Velocity | the greatest velocity of a falling object; occurs when the force of GRAVITY is EQUAL to the force of FRICTION |
Weight | a measure of the force of of GRAVITY on an object |
Mass | the amount of matter in something |
Centripetal Force | the force that is pulling an object in a circular motion towards the center of the circle |
Geosynchronous Orbit | occurs when an object orbits another object at a rate equal to the 2nd object's rate of motion |