We had a ramp and we rolled jelly beans and M and M’s down it, we used three different ramp heights, high, medium, and low, we didn’t have a protractor so we estimated.
We recorded the time when we heard it hit the floor.
On the high ramp M and M’s were clearly faster. On the medium ramp the data was inconsistent, some M and M’s were faster and some jelly beans were faster than M and M’s,
they were pretty even but for the medium ramp jelly beans seemed to be faster. On the small ramp the jelly beans were faster again,
the only problem is we had to drop the M and M’s from a tiny height, otherwise they would not go down the ramp. In the end there doesn't seem to be a faster one, the data was too inconsistent and it could have been due to human error with the stopwatch.
Our conclusion is that M and M's are faster than Jelly beans in all three categories, although it was only by 0.06 seconds on medium and by 0.02 seconds on high.
On low M and M’s were clearly faster, and for the overall average, M and M’s were only faster by 0.05 seconds.