2000-2001: Review Sheet - Introduction to Waves

	Position-Time graphs	Velocity-Time graphs

direction of motion	sloped up, positive direction sloped down, negative direction	1st quadrant, positive direction 4th quadrant, negative direction
instantaneous velocity	slope of line, including + or -	height of line, including + or -
instantaneous speed	absolute value of the slope, always positive	absolute value of the height, always positive
at rest	flat line segments where position remains the same	flat line segments coincident with the x-axis showing a velocity of zero
distance traveled	track the \| changes in the height of each line \| during the time interval requested, always +	calculate the \| areas under each line segment \| during the time interval requested, always +
net displacement	compare the y-values of the starting and ending points, subtract y_final - y_initial	calculate the cumulative areas paying attention to + and - areas
instantaneous position	height of a line segment at a specific time	cumulative displacement when given a starting position
average speed	total distance / total time	total distance / total time
average velocity	net displacement / total time slope of a secant connecting the starting and ending points	net displacement / total time