What do we need to know to detrmine acceleration?

To calculate acceleration, use the equation a = Δv / Δt, where Δv is the change in velocity, and Δt is how long it took for that change to occur. To calculate Δv, use the equation Δv = vf - vi, where vf is final velocity and vi is initial velocity.

Explanation:

Calculating acceleration involves dividing velocity by time — or in terms of SI units, dividing the meter per second [m/s] by the second [s].

Dividing distance by time twice is the same as dividing distance by the square of time.

Thus the SI unit of acceleration is the meter per second squared .