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# PBHS Speed&Velocity

### Speed & Velocity Unit

motion a change in position relative to a reference point
reference point something used for comparison to determine motion or position
vector quantity a quantity that includes both magnitude and direction
scalar quantity a quantity that includes magnitude, only
magnitude size or amount
distance total length of a path
displacement distance and direction from starting point to finish point in a straight line
vector displacement is a ___ quantity.
speed distance per unit of time (distance traveled in a unit of time)
average speed total distance divided by total time
instantaneous speed speed in a moment of time
velocity speed with direction
velocity formula v = d/t
1000 There are ____ meters in one kilometer.
10 There are ____ milliseconds in ever centisecond.
100 There are ____ centigrams in every gram.
velocity Speed with direction defines ____.
displacement Where something ends up compared to where it started including the direction is ____.
magnitude size or amount is
reference point Motion is detected using comparison to a ____ ____.
kilo- The prefix meaning 1000 is __.
centi- The prefix meaning 1/100 is __.
milli- The prefix meaning 1/1000 is __.
Created by: gkarlish