Understanding Acceleration
Acceleration is the rate of change of velocity. It tells you how quickly an object's speed and/or direction are changing.
Tools for Finding Acceleration
* Velocity: You *need* to know the initial and final velocities of the object.
* Time: You *need* to know the time interval over which the velocity changes.
* Displacement: You can use the object's displacement (change in position) along with time to find average acceleration, but it's not strictly necessary.
What You Don't Need
* Mass: While mass is important for determining the force needed to produce a certain acceleration (Newton's Second Law: F = ma), it's not directly required to calculate acceleration itself.
Therefore, the answer is mass.
Let me know if you'd like more examples or explanations!
