lesson one Flashcards
may be defined as push or pull
force
is the vector sum of all forces
net force
two equal forces acting on an object
balanced force
cause an object to start or stop moving, slow down or speed up
unbalanced force
states that every object continues to remain at rest or in uniform motion
law of inertia
states that acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass
law of acceleration
3rd law of motion
law of interaction
a force that opposes motion
friction
no relative motion between two bodies
static friction
opposes sliding motion
kinetic friction
rollers or wheels are used
rolling friction
the resistance to flow of the particles of a liquid
viscosity
slows down moving objects
air resistance
the tracing of the flow of fluids through an object
streamlining
zero net force means no acceleration
terminal velocity
