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Describing Motion with Words - Coggle Diagram
Describing Motion with Words
Mechanics
The study of the motion of objects.
Kinetics
The science of describing the motion of objects using words diagrams, numbers, graphs, and equations. Kinematics is a branch of mechanics.
Scalars
are quantities that are fully described by a magnitude (or numerical value) alone.
Vectors
are quantities that are fully described by both a magnitude and a direction.
Distance
is a scalar quantity that refers to "how much ground an object has covered" during its motion.
Vector quantity
such as displacement is direction-aware
Displacement
s a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.
Scalar quantity
such as distance is ignorant of direction.
Speed
a scalar quantity that refers to "how fast an object is moving."
Velocity
a vector quantity that refers to "the rate at which an object changes its position."
Instantaneous speed
the speed at any given instant in time.
Average speed
the average of all instantaneous speeds; found simply by a distance/time ratio.
Acceleration
is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.
Constant Aceleration
velocity that is changing by a constant amount each second.
Free-falling object
Any object that is being acted upon only by the force of gravity.