Gravity - Which Hit The Ground First?

 

(The link to the photo above: http://en.wikipedia.org/wiki/Marble_(toy))

Yesterday my partner and I conducted an investigation about gravity using certain objects like:

• Marble
• Rubber
• Flat Paper
• Crumpled Paper
• Feather
• Paper Clip
• Pencil
• Ping Pong Ball

We used these objects (names above) to see which hit the ground first. But before we went straight into it we had to predict which of the objects we think will hit the ground first. So we grabbed two objects, leveled them to see if its on an equal height then dropped them both at the same time to see what results we’ll get.

The table below shows my results:

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