Question

Why do a coconut, a stone and a piece of paper fall on the ground at the same time if released from a height simultaneously?
A. They all have same mass
B. They all have same density
C. They all have the same volume
D. They all have same acceleration during their motion

Answer 1

Hint:Objects given in the question have different masses, therefore different volumes and densities. Objects have acceleration when they fall downwards. This acceleration is called acceleration due to gravity which will be the same for all the objects.

Complete step by step answer:
Every object on this earth has a mass, has a volume and therefore has a density.
Here a coconut, a stone and a piece of paper is given. The masses of these three objects may not be the same. Therefore may not have the same volumes and densities as mass is directly proportional to volume.But every object will have acceleration due to gravity acting upon them when they are moving downwards.This acceleration due to gravity is the same for all the objects in motion and thus all the objects fall with the same rate irrespective of their masses.The answer is Option D.

Note: Free fall is a special type of motion in which the only force acting upon an object is gravity. Objects that are said to be free falling are not having a significant force of air resistance; they are falling under the sole influence of gravity. That is why all objects will fall with the same rate of acceleration due to gravity, regardless of their masses.