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 We have to have a water-based game discussion each year, because every time I try to start up a "jello-based game" thread no one takes me seriously... - dlavery [more] |
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| We have to have a water-based game discussion each year, because every time I try to start up a "jello-based game" thread no one takes me seriously... - dlavery [more] |
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#8
28-01-2010, 20:27
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Re: Kicker Help?
We calculated that about 100 pounds of force exerted on the ball with a contact time of 0.01 seconds would launch the ball 20 meters (60 feet). The kicker would contact the ball at 7m/sec which given a coefficient of restitution of 0.7 for a soccer ball means a launch speed of 14 m/sec.
We haven't reached 100 pounds yet. Cocking the kicker prototype part way with a tight elastic spring results in a launch of about 40 feet. We think 60 feet should be feasible using this method. Dan Wexler Team 2547 |
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