Science Investigation-Gravity

I carried out an investigation about gravity and how does it affect the movement of falling objects.

We each had two objects to use to see which would fall on the floor/desk first.

Materials:

1. Marble
2. Ping Pong ball
3. Sheet of paper
4. Rubber
5. Pencil
6. Paper clip
7. Feather  

We dropped two of the items at the same height so the results could be much fair.

Here is a diagram of the results:

Object Dropped		Which hit the ground first?	Which actually hit the ground first?
Marble	Ping pong ball	Marble	Marble
Rubber	Paper Clip	Rubber	paper clip
Marble	Pencil	Marble	Pencil
Flat Paper	Feather	Flat paper	Feather
Crumbled Paper	Feather	Crumbled Paper	Feather
Feather	Paper Clip	Paper Clip	Feather