Question

dominos standing in a row will all fall if the first one is tipped toward the others. how does the law of conservation of energy describe this?

Answer 1

When the domino's are standing they have potential energy. When the first one is tipped over it goes from your finger to the first domino all the way to the last one. No energy was created or destroyed it was only transformed through each domino.

Answer 2

Please medal if this helped :P