Going back to definitions, Velocity is change of distance with time;
and acceleration is change in velocity with time.
Initially, the velocity is zero, as is the acceleration, BUT the Force of Gravity attracts the falling mass, and causes velocity to appear.
But the continued application of the Force of Gravity causes the velocity to increase.
And as we know, increase in velocity is acceleration. [space for QED]
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no, you need to know its initial velocity to determine this; if initial velocity is zero then distance is 1/2 acceleration x time squared
If your velocity is constant, then your acceleration is zero.
the formula for finding acceleration is final velocity, minus initial velocity, all over time. So if you have the acceleration and initial speed, which is equal to the initial velocity, you must also have time in order to find the final velocity. Once you have the time, you multiply it by the acceleration. That product gives you the difference of the final velocity and initial velocity, so then you just add the initial velocity to the product to find the final velocity.
You use the information you're given, along with the equations and formulas you know that relate distance, time, speed, and acceleration, to calculate the number you're asked to find. And here's a tip: Chances are that the initial acceleration, the final acceleration, and the acceleration all along the way, are all the same number.
Well, (final velocity) = (initial velocity) + (acceleration x time)