a = Δv / Δt

Where:

* a is acceleration

* Δv is the change in velocity

* Δt is the change in time

This equation means that acceleration is the rate of change of velocity over time.

Here's what you need to know about this equation:

* Units:

* Acceleration is measured in meters per second squared (m/s²).

* Velocity is measured in meters per second (m/s).

* Time is measured in seconds (s).

* Direction: Acceleration is a vector quantity, meaning it has both magnitude (how much) and direction.

* Constant acceleration: This equation is particularly useful when dealing with constant acceleration, meaning the velocity changes at a steady rate.

Other useful equations for acceleration:

* a = (v_f - v_i) / t: This is a variation of the first equation, where v_f is the final velocity and v_i is the initial velocity.

* a = F / m: This equation relates acceleration to force (F) and mass (m). This is Newton's Second Law of Motion.

Remember: The specific equation you use will depend on the information you have about the motion of the object.