kinematics Flashcards
kinematics
the study of motion; how objects move
dynamics
the study of the cause of motion; why things move
motion
the movement of an object from one place to another measured by an observer
uniform motion
motion at a constant speed in a constant dirextion
non-uniform motion
motion that involves changes In speed, direction, or both
distance (m)
the total length of the path travelled by an object in motion
scalar quantity
a quality that has magnitude (size) only
ex. distance, speed
vector quantity
a quality that has both magnitude and direction.
An arrow is placed above the symbol when it represents a vector quantity
ex. velocity, displacement, acceleration
displacement
the change in an objects position
speed
distance travelled per unit time
velocity
displacement of an object per unit time
what does the slope of a position time graph tell you?
tells you the velocity of an object
position
the distance and direction of an object from a particular reference point
instantaneous velocity
the velocity of an object at a specific instant in time
average velocity
the velocity of an object over a time interval
