Which fabics move the sail faster

I think the cotton sail will work the best because it feels thick and stretchy. The wool sail feels rough, and I think it might not move. I think the paper sail will not move too because it is too light.

1.)Fill a 2 foot pan and fill it with water to the top

2.)Get a fan that will blow the sail

3.)Get paper, wool and cotton to put on you sail.

4.)Get a sailboat

5.)Get a stopwatch to time how long it takes the sailboat to get to the other side.

6.)Then turn the fan on and time how long the sailboat takes for the front of the sailboat to touch the other side.

7.) repeat with each fabric 3x

Which fabric (paper, wool, cotton) will move a sailboat the quickest?

I picked three fabrics and put them on a sail to see which one sailed the fastest. My hypothesis was wrong I thought the cotton was going to go the fastest. But the paper sail had an average of 5.24 seconds, and the cotton only had an 10.86 second average. This wasn't accurate because I only used a wood plank and straw as a sailboat. I could have used better material.

I chose this project because I love sails. Maybe when I'm older I can build a life size sailboat myself. I used different kinds of fabrics to build the sail. I used cotton, paper, and wool. I tested which fabric would allow the sailboat to move the fastest. My hypothesis is the cotton will move the boat the fastest because it is a really light fabric. What fabric will you think will go faster?

First I made a boat from a wood plank and taped tubes on it to attach the different sails. Then I switched the fabrics one at a time. I used a stopwatch to time how fast the boat will take for a fan to push it.

The paper sail only went an avg. of 5.24sec. The wool sail only went an avg. of 7.32sec. The cotton sail only went an avg. of 10.86sec.

The paper is the best sail you can do. If you have a small sailboat race I will prefer a paper sail. My hypothesis is wrong. I said the cotton will do the best but the cotton went 10.86second avg. This was inaccurate The sail could be better form. The fan is not fast as the wind.