Question

When you drop an eraser and a sheet of paper from the same height, both

will reach the ground at the same time in the _______ medium.​

Answer 1

When you drop an eraser and a sheet of paper from the same height, to know whether both  will reach the ground at the same time in which medium, we should know about Gravity and air resistance.

Earth gives same acceleration to everything, so objects with different masses will hit the ground at the same time when dropped from the same height. But in real case, the less massive object will fall down slowly than the object with greater mass, due to air resistance.

So, objects of different masses dropped from same height will reach ground at the same time only in vacuum.

When you drop an eraser and a sheet of paper from the same height, both  will reach the ground at the same time in the vacuum medium.​