Question

Free fall : discuss the motion of an object under free fall . Neglect aur resistance

Answer 1

Dear Student,
Free fall of a body is related to its motion only under the influence of its own weight, i.e. in the presence of the gravitational pull only. No other external force acts on it. Such a motion is possible only if it is falling from a certain height above the earth's surface and is termed as the free fall.
Free fall under practical conditions is not possible. The air present in the atmosphere causes friction in the downward fall. The frictional force due to air resistance will then be an extra force acting on the falling body. Thus, the acceleration in this case will not be equal to acceleration due to gravity and hence, the downward fall cannot be considered as free fall.
In order to consider a free fall, air resistance has to be neglected.
Regards