This week we did a mini experiment of floating a ping pong ball as high as possible with papers and balloon. It remind me of watching a video during lecture time that is using a hair dryer to float a ping pong ball. So I guess that the theory applied to it are the same since air stream from the balloon moves faster around the side of the ball than the air on top of it causing heavier pressure on top of the ball to hold it firmly for a period of time. Hope that there are more such experiment for us to explore.
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