what are two variables is acceleration dependent on? what is the relationship between these variables and acceleration?
Acceleration (change of movement) of an object is dependent on the net force acting on it and its mass.
The relationship between acceleration (a), force (f) and mass (m) is given by the Second Lay of Newton: f = m * a.
Note that the force, f, is the net force acting on the objetct.
More general acceleration is the derivative of the velocity over time
\(a = \frac{dv}{dt}\)
So I would think, acceleration depends on velocity and time.