Acceleration is the rate of change of velocity over time. It is a vector quantity and is measured in units of meters per second squared (m/s²).
Average acceleration is calculated by dividing the change in velocity by the change in time. It can be represented by the formula a = (vf - vi) / t, where a is acceleration, vf is final velocity, vi is initial velocity, and t is time.
Average acceleration is the average rate of change of velocity over a period of time, while instantaneous acceleration is the acceleration at a specific moment in time. Average acceleration takes into account the entire change in velocity, while instantaneous acceleration only considers the change at one point.
On a velocity-time graph, average acceleration is represented by the slope of the line connecting the initial and final velocity points. If the line is horizontal, there is no acceleration. If the line is positive and sloping upwards, there is positive acceleration. If the line is negative and sloping downwards, there is negative acceleration.
The magnitude of average acceleration can be affected by various factors, including the initial and final velocity, the time interval, and any external forces acting on the object. In general, the greater the change in velocity over a shorter period of time, the larger the magnitude of average acceleration will be.