physics quiz #1
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17 Terms
kinematics
the study of motion using words, numbers, graphs, or equations
scientific notation
a way of writing very large or very small numbers
significant figure
the output of a calculation cannot be more precise than the input
SI unit
all unis of measurement can be derived from these 7 base units
vectors
when describing the motion of an object, the direction matters. we represent the direction of an object’s motion using _______.
scalar quantity
has magnitude but no direction (speed, mass, time, distance, etc.)
vector quantity
has both magnitude and direction (displacement and velocity)
vector notation
25 km [N10W]
position
the location of an object relative to a reference point
vector
position is a ______ quantity.
scalar
distance is a ______ quantity.
distance
the total length of the path traveled, regardless of direction
displacement
the change in position
speed
how fast and object is moving. ______ is scalar because direction does not matter.
velocity
the rate of change of position. _______ is a vector quantity because direction does matter.
velocity
what formula is this?
speed (s=d/t)
what formula is this?
