Stacked Ball Drop


check out how high these different balls bounce the basketball the super bouncy ball and the golf ball now I’m going to try the golf ball on top of the bouncy ball on top of the basketball and then I’m going to explain how it’s related to a supernova didn’t you see that probably not so here it is again the golf ball bounced to 28 feet we dropped it from about three and a half feet so it went up 800 percent of its dropped height in fact if you consider that by itself the golf ball bounce is about 70% of its dropped height it went as high as if it had fallen from 40 feet up that is awesome so how can we get the golf ball to bounce up with that much energy let’s simplify it to these two balls when you drop them individually each ball starts out with some potential energy from the height of the drop as the balls hit the ground some energy goes into heating up the ground and some goes into heating the ball because that energy left the ball system you can’t get back up to the same height but when you combine them the tennis ball goes higher than its dropped height way higher where does it get the extra energy as the basketball bounces it compresses storing elastic potential energy as it releases its springboards the tennis ball upward just at the right moment this is like the double bounce on a trampoline when you jump right before someone else you prepare the elastic of the trampoline by stretching it and storing energy which can then bounce the jumper even higher in the same way the basketball stores energy in its compression and is able to push the tennis ball but just like the double bounce preparer the basketball can’t go as high you can see that here it bounces even less when three balls are dropped together also during that transfer of energy some momentum transfers from the basketball to the tennis ball and since the basketball starts with way more momentum because of its larger mass the tennis balls velocity increases by a lot and it flies up up in a way now back to the triple super ball bounce now you get the energy from the basketballs bounce being transferred into the bounce of the super bouncy ball which is then transferred to the golf balls bounce you put the same amount of energy or momentum from two more massive objects into a smaller object and it will go much faster epoch just like the explosions of a supernova which may seem unrelated but what we just did is analogous to the process that occurs during the explosion of a supernova just like our more massive basketball transfers momentum to the smaller balls energy from the dense core of the supernova is transferred in a shock wave that moves through the star to the less dense layers and accelerates them outward at a super high velocity more massive or denser layers in the core of the supernova begin to collapse when fusion stops there the collapse is halted when the neutrons in the core actually touch sort of this causes the implosion to rebound and bounce outward you end up with a dense core left behind and these wild outer shells of star exploding outward pretty cool and of course if you try this at home which you should you have to make sure the balls are perfectly vertically aligned because any off centeredness gets amplified by the two points of contact which is why we sadly couldn’t get the quadruple Tower of balls to work but if you put a little ring of hot glue or something similar on the balls it helps to balance them have you physics seen