Free fall is a specific application of acceleration and kinematics, where gravity is the only form of acceleration in a given problem. These questions include objects being thrown up, or objects falling down without any applied acceleration.
The video below helps you understand the nature of Free Fall as it will show up on your MCAT including implied estimations for gravity and knowing which kinematic equations to use.
Translational Motion 7 – Free Fall
(Watch on YouTube: Free Fall. Click cc on the bottom right for video transcription.)
This is Video 7 in my series on Translational Motion in MCAT Physics. Click HERE for the entire series