Kelsie+&+Kris

We think that the dollar is less dangerous because it is bigger so it has more drag. :]

Wow - I didn't expect the penny to win! I think your explanation must be correct - less drag. Excellent work!

<3 Kelsie & Kris.

Monday: We would use the chip clip to drop them so that we know that they both release at the same time. We will know which one hits because we will be filming the the entire area so that we know that they were both released at the same time & so that we can go back and zoom in to look at their landing. :]

Kelsie & Kris.

Tuesday: We took the penny and the dollar coin out to the stairwell and dropped it with the chip clip on a piece of foam & filmed it. When we went back and looked at the film, we saw that the penny hit first. Our hypothesis from Monday was wrong, because we thought that the coin was going to hit first. We think that the penny hit first because it was lighter and it had less drag to it.

Kris & Kelsie. <3

Wednesday: We did another test today to see if it would have the same results as yesterday, and it did. Then we went around the class and we asked John Steve and Amanda's group what they got, they dropped theirs from a higher point than we did. They went to the stop of the stairwell and dropped it all the way down and they said that the penny hit first, but the dollar hit harder. They basically got the same thing as we did, the penny ended up winning because it had less drag. Then we asked Felicia and Danielle what happened when they tested it. They dropped it form the same point that Johns group did, and they said that the penny also won. We concluded that the penny will always win at any given height because it has less drag than the dollar coin. But the dollar coin will always land harder than the penny because it has more weight. :]

Kris & Kelsie. <3