Science experiment

For science we have been investigating how to make a ball roll further.  We made predictions by making one change to the experiment.  This is what we changed: using 5 books instead of 4 books, putting the ramp at the end of the books or using a chair instead of books.  This was our results:

We found that the ramp that was on the chair made the ball roll further because it was higher up and the ball could pick more speed up.

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