Kinematics - Coggle Diagram
Describing motion with words
Distance and Displacement
A scalar quantity that refers to "how much ground an object has covered" during its motion.
Is ignorant of direction
A vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.
Speed and Velocity
A scalar quantity that refers to "how fast an object is moving." It does not keep track of direction
Rate in which an object covers distance
An object with no movement has zero speed.
A slow-moving object has a low speed and covers a small amount of distance in the same amount of time.
A fast-moving object has a high speed and covers a large distance in a short amount of time.
The average of all instantaneous speeds; found simply by a distance/time ratio.
The speed at any given instant in time.
Calculated as the distance/time ratio
A vector quantity that refers to "the rate at which an object changes its position." It is direction aware.
Rate in which position is changed
If a person takes one step forward and one step back, they would have zero velocity since there is never a change in their position.
To maximize velocity a person would need to get as far away as he can from the original position, never changing direction towards where he started.
Scalars and Vectors
Physics is a mathematical science.
Mathematical quantities can be separated into two categories.
Quantities that are fully described by a magnitude (or numerical value) alone.
Quantities that are fully described by both a magnitude and a direction.
The motion of objects can be described by words such as
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.
It is defined by the change in how fast an object is moving.
When the velocity of an object is changing by a constant amount each second.
Free-falling objects are constantly accelerating.
Direction of the Acceleration Vector
The direction of the acceleration vector depends on two things:
whether the object is speeding up or slowing down
whether the object is moving in the + or - direction
The study of the motion of objects.
The science of describing the motion of objects using words, diagrams, numbers, graphs, and equations.
To develop sophisticated mental models that serve to describe the motion of real world objects.
All of these terms are used to describe the motion of objects.