position function
s(t) OR x(t)
velocity function
v(t) OR x’(t)
acceleration function
a(t) OR x’‘(t)
neg velocity
moving down OR left
pos velocity
moving up OR right
zero velocity
at rest
speed
abs val of velocity
if velocity and acceleration have the same sign then
speeding up
if velocity and acceleration have different signs then
slowing down
displacement
x(b) - x(a)