Before We Get Moving...
the branch of physics that deals with analyzing and understanding objects in motion, forces applied to those objects, and the energy that exists in them
What is the science of mechanics?
a physical measurement that contains both magnitude (number) and directional information
What is a vector quantity?
the ratio of total distance traveled to the total time of the trip
the difference between individual speeds (speed of object 1 - speed of object 2)
What is relative speed in SAME direction?
a point against which direction is measured
What is a reference point?
the distance an object travels plus the direction from the starting point
What is displacement?
the rate at which an object is moving at a given moment in time
What is instantaneous speed?
the sum of individual speeds (speed of object 1 + speed of object 2)
What is relative speed in OPPOSITE direction?
using a reference point to direct motion
What is a frame of reference?
used to estimate values that are either higher or lower than the actual data collected
What is extrapolation?
slope on a distance/time graph represents _____.
A velocity must contain these three things
What are unit of distance, a unit of time, and a unit of direction?
one of the most important concepts in all physics
What is "all motion is relative"?
a physical measurement that contains only magnitude (number) and does not contain directional information
What is a scalar quantity?
the time rate of change of an object's velocity
What is acceleration?
The slope of a speed/time graph represents this
What is the magnitude of acceleration?
Thomas Aquinas referred to God as the original _____.
points directly from starting point to ending point; the sum of all the vectors in the given circumstance
What is the resultant vector?
The made-up English term to describe negative acceleration
What is "deceleration"?
If an object speeds up, slows down, or changes direction, its _____ changes each time.
What is velocity?