Units, Physical Quantities, and Vectors Flashcards
an experimental science in which physicists seek patterns that relate the phenomena of nature.
Physics
In SI units, length is measured in _________, time in _______, and mass in _________.
meters
seconds
kilograms
The uncertainty of a measured quantity is indicated by its number of
significant figures
offers techniques for setting up and solving problems efficiently and accurately.
problem-solving strategy
vector quantity is represented in
boldface italic type with an arrow over it
Solving Physics Problems STEPS
IDENTIFY the relevant concepts
SET UP the problem
EXECUTE the solution
EVALUATE your answer
The patterns are called
physical theories
uncertainty is indicated by the number of meaningful digits
significant figures
simply a change in the position of an object
displacement
The _________ is also called the error because it indicates the maximum difference there is likely to be between the measured value and the true value
uncertainty
three fundamental quantities of physics
length, time, and mass
A very well established or widely used theory is called a
physical law or principle
For multiplication and division, the answer can have no more significant figures than the _________ number of significant figures in the factors
smallest
has both a magnitude and a direction in space.
vector quantity
can be described by a single number.
scalar quantity
