Free fall is defined as a situation when a body is moving only under the influence of earth’s gravity. Since external force is acting on the ball the motion will be accelerated. This free fall acceleration is also known as acceleration due to gravity A free fall is simply a downward motion without any initial force or velocity. Our earth has the inherent property of attracting items towards it. Hence a free fall is simply a natural phenomenon on earth for any object at any. height without any support.