Average acceleration is the rate of change of an object's velocity over a specific time period. It is calculated by dividing the change in velocity by the time interval.
Average acceleration is calculated over a specific time period, while instantaneous acceleration is the acceleration at a particular moment in time. Average acceleration takes into account the change in velocity over a period of time, while instantaneous acceleration is the change in velocity at a single instant.
The formula for average acceleration is average acceleration = (final velocity - initial velocity)/time interval. It can also be written as a = (vf - vi)/t.
The direction of average acceleration is determined by the change in velocity over the time interval. If the velocity increases, the direction of acceleration is in the same direction as the velocity. If the velocity decreases, the direction of acceleration is opposite to the velocity.
Yes, average acceleration can be negative. This means that the object is slowing down, or its velocity is decreasing over the time interval. A negative average acceleration can also indicate that the object is moving in the opposite direction of its initial velocity.