A student placed one hundred dominoes upright in a row. He knocked over the first domino and the rest all fell over; one after another. What made the domino at the end of the row move?
The domino at the end of the row moved because of a chain reaction. When the first domino was knocked over, it transferred its kinetic energy to the second domino, causing it to fall. This process continued down the line, with each domino falling over and transferring its energy to the next one until it reached the last domino. The force and energy from all the dominos falling in succession eventually reached the last domino, causing it to move and fall over as well.
