I had 13 domino sets, with 28 pieces each. 13 x 28 = 364 pieces.
I also had 76 little men.
I measured that each piece took 3cm. 364 x 3 = 1.092 cm= 10.92m.
I measured that each little man took 4cm. 76 x 4= 304 cm = 3.04m.
Total distance. 10.92 + 3.04 = 13.96m.
I took the measuring tape to the garden to see how long it was, and it was looooooong.
I timed the falling pieces with a stop watch.
30 pieces = 1.42 seconds. (364 ÷ 30) x 1.42 =17.23 seconds.
20 men = 1.23 seconds.(76 ÷ 20) x 1.23 = 4.67.
Total time 17.23 + 4.67 = 21.90 seconds.
We decided to build half on the table and half on the floor so it took us a looooong time to build up the experiment.
Although we included fire stoppers every number of pieces....
....sometimes it didn't work and it was very frustrating!!!
At the end we inserted the little tricks.
And we filled up the fire-stop gaps taking lots of care.
We were finally ready to launch the wave and so we did. Here is the result.
As you have seen it didn't go as we wanted but we learned about the errors.
Does anyone dare to build up a bigger one???