Physics

velocity

a vector measurement of the change in position divided by the change in time.

Acceleration

the slope of a velocity-time graph

kinematics

study of motion without reference to the forces that cause motion

distance

measures how far an object has traveled and is a scalar measurement

vector

A measurement that has magnitude and direction

free fall

the motion of an object when gravity is the only significant force acting on it

magnitude

the size of a measurement

Displacement

the change in position that is a vector measuremetn

Newton's First Law

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Newton's Second Law

Fnet\=ma

Newton's Third Law

For every action there is an equal and opposite reaction. The idea that forces come in pairs

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Equilibrium

a state in which opposing forces or influences are balanced.

field force

a force that is exerted without contact (ex: gravity)

force

A push or pull exerted on an object

the normal force

the perpendicular contact force exerted by a surface on another object

apparent weight

the force exerted on a scale by an object and other forces acting upon the object. Adding acceleration to the true weight

drag force

a force exerted by a fluid on an object moving through the fluid (ex: object in free fall)

mass

the measure of inertia in an object. will never change for an object

agent

cause of a force

Newton (N)

unit of measurement for force

tension

a force that is a pull on a rope or string

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net force

The sum of all forces acting on an object

terminal velocity

the constant velocity of a falling object when the drag force equals the force of gravity

equilibrant

has the same magnitude as the resultant, but opposite in direction.