**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.