Which Domino Row Will Fall First? Ask Here!

[martine]

Hi all,

one simple question.

You have two evenly long rows of dominos. In one row the dominos stand further apart than in the other. If you start both rows at the same time, which will be faster? My guess is the one with the stones closer because the dominos don't need to fall as deep as the others and thus need less time.

What do you think?

 

[jcsd]

Not necessarily: though each domino in the row where they are closer together takes less time hit the next domino, there are more dominoes in the row, however in practice I do think that the row with closer spacing will take less time to fall (though I wonder if this is true as each domino in the row with more open spacing will have more time to accelrate as it falls).