SOUP CAN RACES

• Which of the following theories/hypotheses best explains the behavior of the cans?

1. In each race, one can won because it was heavier than the other.
2. In each race, one can won because it had a smoother surface than the other.
3. In each race, one can won because it contained a different kind of soup than the other.
4. None of the above is an adequate explanation. A better theory is that in each race, one can won because …. {make up your own theory}

For each theory, devise an experiment that could convincingly demonstrate the theory is not a reasonable explanation for the can race results?