Chapter 1. Average velocity for linear motion (2-1)

Question

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{"title":"Velocity","description":"Correct","type":"correct","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"1,26,28,54\"}]"} {"title":"X \\(\\sub{2}) and t\\(\\sub{2}\\)","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"126,6,163,37\"},{\"shape\":\"rect\",\"coords\":\"134,51,166,91\"}]"} {"title":"Displacement","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"166,6,185,32\"},{\"shape\":\"rect\",\"coords\":\"256,8,300,35\"}]"} {"title":"Elapsed time","description":"Incorrect","type":"incorrect","color":"#000080","code":"[{\"shape\":\"rect\",\"coords\":\"263,43,293,75\"},{\"shape\":\"rect\",\"coords\":\"168,48,190,75\"}]"}

Question

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{"title":"Velocity","description":"Incorrect","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"1,26,28,54\"}]"} {"title":"X \\(\\sub{2}) and t\\(\\sub{2}\\)","description":"Correct!","type":"correct","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"126,6,163,37\"},{\"shape\":\"rect\",\"coords\":\"134,51,166,91\"}]"} {"title":"Displacement","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"166,6,185,32\"},{\"shape\":\"rect\",\"coords\":\"256,8,300,35\"}]"} {"title":"Elapsed time","description":"Incorrect","type":"incorrect","color":"#000080","code":"[{\"shape\":\"rect\",\"coords\":\"263,43,293,75\"},{\"shape\":\"rect\",\"coords\":\"168,48,190,75\"}]"}

Question

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{"title":"Velocity","description":"Incorrect","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"1,26,28,54\"}]"} {"title":"X \\(\\sub{2}) and t\\(\\sub{2}\\)","description":"Incorrect","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"126,6,163,37\"},{\"shape\":\"rect\",\"coords\":\"134,51,166,91\"}]"} {"title":"Displacement","description":"Correct!","type":"correct","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"166,6,185,32\"},{\"shape\":\"rect\",\"coords\":\"256,8,300,35\"}]"} {"title":"Elapsed time","description":"Incorrect","type":"incorrect","color":"#000080","code":"[{\"shape\":\"rect\",\"coords\":\"263,43,293,75\"},{\"shape\":\"rect\",\"coords\":\"168,48,190,75\"}]"}

Question

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{"title":"Velocity","description":"Incorrect","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"1,26,28,54\"}]"} {"title":"X \\(\\sub{2}) and t\\(\\sub{2}\\)","description":"Incorrect","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"126,6,163,37\"},{\"shape\":\"rect\",\"coords\":\"134,51,166,91\"}]"} {"title":"Displacement","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"166,6,185,32\"},{\"shape\":\"rect\",\"coords\":\"256,8,300,35\"}]"} {"title":"Elapsed time","description":"Correct!","type":"correct","color":"#000080","code":"[{\"shape\":\"rect\",\"coords\":\"263,43,293,75\"},{\"shape\":\"rect\",\"coords\":\"168,48,190,75\"}]"}

Review

In Equation 2-1 \(\Delta{x}\) (“delta-x”) is an abbreviation for the change \(x_2 - x_1\) in the position \(x\), and \(\Delta{t}\) (“delta-t”) is an abbreviation for the change \(t_2 - t_1\) in the time \(t\); that is, the elapsed time.