 Welcome back to Kids Fun Science. My name is Ken and today's experiment is coin snatching and the science behind it. As always, adult supervision is required. What you need for this experiment is coins and an elbow. See the description for more information about coin snatching and how to do it properly. Here are the official rules for coin snatching. I'll let you read them for yourself and go back to the science behind it. Hi, much as many as what I do because I don't have big enough hands. Woo! Now you're seeing how you're on fire. How'd it go? Yeah, it's actually really easy once you know how to like do it. Okay, the science behind coin snatching. Since the coin is still it tends to remain in that position. Good ol inertia again. When your elbow moves rapidly, it just drops out from underneath the coin. This leaves the coin hanging in the air. Gravity then starts to pull the coin towards the ground, but inertia gives it a slow start. Your hand is faster than the coin because your hand is already moving. As we see in slow motion here, the elbow starts to move leaving the coins hanging there with inertia. Then your hand's moving faster than the coins and you're able to catch the coins. Here Grace was able to catch seven coins where she had a really hard time the first time, but what practice will help out. Nice! How'd it go? Yeah, it's actually really easy once you know how to like do it. So now it's my turn to give it a try as I should be able to catch more coins than Grace as my hands are larger. And so I'll be able to hold more coins with practice. The world record, this is coin snatching right and there's rules and we'll tell you the rules. But the Guinness Book of Records says quarters don't count so in the United States it really not a record. But the record is 328 coins. 328! I just did one. I'm going to try 10 right now. One, two, three, four, five, six, seven, eight, nine, ten. 20 coins! Here are our results. Grace had 12 U.S. Quarters, I had 30. Michael Torres is the world record hoarder with 328 10p coins. Make sure you comment below and let us know how many coins you caught and thanks for watching.