Question | Answer |
MOMENTUM | THE PRODUCT OF AN OBJECT'S MASS AND ITS VELOCITY |
FORMULA FOR MOMENTUM | m = pv |
lAW 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 aare 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 motion. |
BALANCED FORCES | the net force acting on an object is zero |
UNBALANCE FORCES | 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 eachother |
STATIC FRICTION | Friction between non-moving objects |
KINETIC FRICTION | Friction between moving objects |
SLIDING FRICTION | Friction between objects that slide (rub) against eachother |
ROLLING FRICTION | occurs when an object rolls over a surface |
FLUID FRICTION | occurs when an object moves through a fluid or a gas |
NEWTONS FIRST LAW OF MOTION | Objects at rest will stay at reast & objects in motion will stay in motion at a constant velocity unless acted on by an unbalanced force |
NEWTONS SECOND LAW OF MOTION | The net force acting on an object is equal to the product of the objects mass & acceleration |
NEWTONS 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 eachother the size of the attraction depends on the mass of the objects and the distance between them. |
FREEFALL | the motion of an object when GRAVITY is the only force acting on it |
TERMINAL VELOCITY | 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 GRAVITY on an object |
MASS | the amount of matter in something |
CENTRIPETAL FORCE | the force that is pulling an object in circular motion towards the center of the circle |
GEOSYNCHRONOUS ORBIT | occurs when the object orbits another object at a rate equal to the 2nd objects rate of rotation |