A coin, a pellet, a small piece of paper and a grain of wheat were placed in Newton’s tube

A coin, a pellet, a small piece of paper and a grain of wheat were placed in Newton’s tube, then air was pumped out of the tube and turned over. falls the fastest to the bottom of the tube.

All items will fall in the same time, because the acceleration of free fall is the same for all bodies, does not depend on their mass and there is no air resistance force, which tends to make the fall uniform. Consequently, the acceleration of gravity imparted by gravity will lead to the same change in the instantaneous velocity in time for all bodies, and they will fall together.