Launch a Tennis Ball Contest
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JPL Invention Challenge 2006
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La Canada team tosses balls 'Constructive Chaos'
Students from Crescenta Valley High School work on their 85-pound mechanism "Constructive Chaos." All teams had to launch 20 tennis balls of varying mass and appearance -- some fuzz free, others almost new, into a target in less than 60 seconds.
  Jet Propulsion Laboratory
   California Institute of Technology