Physics 10 : Motion (1)

scalars

quantities that refer to the size of a measurement or magnitude

vectors

quantities that describe magnitude and direcrion

position

a vector quantity that describes a specific point relative to a reference point

reference point

A place or object used for comparison to determine if an object is in motion

distance

a scalar quantity that describes the length of the path between two points or locations

distance symbol

d

displacement

describes straight line distance and direction from one point to the other. how much an objects position has changed from the initial to the final

displacement symbol

delta d with arrow

time

a scalar quantity that describes when an event occurred

time interval symbol

Delta T

objects in uniform motion ...

travel equal displacements in equal time intervals. objects in uniform motion do not speed up or slow down or change direction

positive slope on a position-time graph

positive velocity, slants up to the right

negative slope on a position-time graph

negative velocity, slows down to the right