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# Newton law of motion

### IPC 2-6 voab

TermDefinition
Motion A Movement
Force A push or pull that acts on an object; Measured in Newtons (N)
Weight The force of gravity acting on an Object
Net Force The overall force acting on an object after all the forces are combined
a) balanced force Net force at zero , no change in objects accelerates
b)unbalanced force Net force not equal to zero,object accelerates
Mass The amount of matter in an object
Intertia the tendency of an object to resist a change in its motion
Accerleration the rate at which velocity changes results from change in speed and or direction
Velocity The speed and direction an object is moving measured relative to a reference
Newton's first law the state of motion of an object does not change as long as the net force acting on the object is zero
Newton's second law -the acceleration of an object is equal to the net force acting on it divided by the object's mass
Acceleration (a) = Net force (F) / Mass (m)
Newton's third law -whenever one object exerts a force on a second object (action force), the second object exerts an equal and opposite force (reaction force) on the first object
Friction a force that opposes the motion of objects that touch as they move past each other
Static friction acts on objects that are not moving (example: keeps shoe from sliding when you take a step)
Sliding friction opposes the direction of motion of an object as it slides over a surface
Rolling friction Acts on rolling objects and is significantly lower than other types of friction
Gravity an attracting force that acts between any two masses
Air resistance —fluid friction acting on an object moving through the air; increases with speed; increases if surface area of moving object increases
Terminal Velocity —the constant velocity of a falling object when the force of air resistance equals the force of gravity
Momentum the product of an object’s mass and its velocity (Momemtum = Mass x Velocity); an object with a large momentum is difficult to stop
Created by: 04keebur04230