• The acceleration vector is the rate of change of velocity vector.
• Acceleration is related to velocity in an analogous way that velocity is related to position.

Average acceleration:   aav

=

Δv Δt

=

vf - vi tf - ti

Instantaneous acceleration: a

=

dv dt

The instantaneous acceleration is the slope of the graph v(t). For constant acceleration, instantaneous accel. = av. accel.

Integrating the instantaneous acceleration gives: Δv =∫ a(t) dt