Time (duration): How much time has passed, usually in seconds
Position: Where you are x(t)
Displacement: xf – x0
Distance: d1 + d2 + d3 = full distance
Velocity: How fast you are going x'(t) = v(t)
Speed: Velocity, but there is NO direction, it is NEVER lower than velocity
Average Velocity: displacement / dt
Average Speed: distance / dt
Acceleration: How fast velocity is changing x”(t) = v'(t) = a(t)
Average Acceleration: vt – v0 / dt
Deceleration: The acceleration is decreasing from Ex. 2m/s^2 to 0.5m/s^2
Negative Acceleration: The acceleration is where you are accelerating backward.
Speed up / Slow down:
Speed Up: The signs of velocity and acceleration have to agree
Slow Down: The signs of velocity and acceleration do not agree
Extra Derived Units:
The change in acceleration is jerk.
The chance in jerk is jounce.
The 4 Kinematic Equations:
Very useful for finding a variable from others, and each one is missing one, so you don’t need all 4.