Discounting any friction with the air, they would both hit the ground at the same time.
Kinetic energy is moving energy
The paper has more surface area and therefore more air resistance than the marble does. If you wad up the sheet of paper in a tight ball, you'll see very little difference in the falling speed.
green marble is not fit for home because you can't find small thinks if it dropped on the floor.
I suppose it could be marble.
I would have gravitational potential energy, which is energy due to height.
Approximately 8"1'
They will hit the ground simultaneously. Gravitational pull is the same on all matter.
I'm pretty sure a marble has less mass
Depends on the density of the marble, as well as its weight. And on the dryness and sizes of the sand particles. Try out a few experiments.
Without air resistance? All three will hit the ground at the same time.
Velocity final = vi + at = 49 m/s displacement = vi * t + ½2at² = 122.5 m vi = 0 a ≈ 9.8 t = 5
Neither ... they would fall together.