exam Flashcards
Acceleration
the are of change of velocity
average velocity
the total displacement divided by the time interval during which the displacement
displacement
the change in position of an object
frame of reference
a coordinate system for specifying the precise location of objects in space
free fall
motion of an object falling with a constant acceleration
components of a vector
the projections of a vector along the axes of a coordinate system
projectile motion
free fall with an initial horizontal velocity
Resultant
a vector representing the sum of two or more vectors
scalar
a physical quantity that has only a magnitude but no direction
vector
a physical quantity that has both a magnitude and a direction
action reaction pair
a pair of simultaneous but opposite forces resulting from the interaction of two objects
coefficient of friction
the ratio of the force of friction to the normal force acting between two objects
contact force
force that arises from the physical contact of two objects
equilibrium
the state in which there is no change in a body’s motion
field force
force that can exist between objects, ben in the absence of physical contact between the objects
