L10EX10.1-Central Impact

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Head on impact – cars http://www.youtube.com/watch?v=V081ndTEtlA The following example can be used to model any situation where we think there is a simple straight central collision, such as in the following videos. Virginia Tech football hit http://www.youtube.com/watch?v=h4v9AE5tM1A

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3/252 The two masses as shown collide with e = 0.50. Find the velocities after impact and the amount of energy lost. Figure out T before and after impact
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Unformatted text preview: Let’s start with Cons of linear momentum What other equation? Two equations, two unknowns Definitely an impact problem – what are the different principles you would apply? Given: Find: v 1 = 0.8 ft/s, v 2 = 2.4 ft/s, e= 0.50, W 1 = 1.5 lbs and W 2 = 2 lbs v 1 and v 2 after impact, percent energy loss Problem type: Put in values Before the impact After the impact Calculate percentage energy loss =2.4 ft/sec...
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