Chapter 3. Components of the velocity vector (3-8)

Question

XVaJAH8JsahVxdmR5MhBJH209G+IOIaXKN44PgzgRF13RCufl+h8TJrblTUfSUmKq0VCS4W2lFoDe9a+xsfIIiwxJG4=
{"title":"x component of the velocity vector v","description":"Correct!","type":"correct","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"53,40,76,62\"},{\"shape\":\"poly\",\"coords\":\"82,133\"}]"} {"title":"x component of the displacement during a short time interval","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"279,21,301,46\"}]"} {"title":"y component of the velocity vector v","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"52,124,78,154\"},{\"shape\":\"poly\",\"coords\":\"113,132\"}]"} {"title":"elapsed time for the time interval","description":"Incorrect","type":"incorrect","color":"#000080","code":"[{\"shape\":\"rect\",\"coords\":\"259,54,293,85\"},{\"shape\":\"rect\",\"coords\":\"261,138,294,177\"}]"} {"title":"y component of the displacement during a short interval","description":"Incorrect","type":"incorrect","color":"#333333","code":"[{\"shape\":\"rect\",\"coords\":\"261,102,298,129\"}]"}

Question

ZRgZvhZxrOYo15H//yEjk23hWHXgszpuDQw82aXfLp99792XXa6rHsEVjRzP8+iarbBShDPbyTAfLBXIjbkFEWAkta0=
{"title":"x component of the velocity vector v","description":"Incorrect","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"53,40,76,62\"},{\"shape\":\"poly\",\"coords\":\"82,133\"}]"} {"title":"x component of the displacement during a short time interval","description":"Correct!","type":"correct","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"279,21,301,46\"}]"} {"title":"y component of the velocity vector v","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"52,124,78,154\"},{\"shape\":\"poly\",\"coords\":\"113,132\"}]"} {"title":"elapsed time for the time interval","description":"Incorrect","type":"incorrect","color":"#000080","code":"[{\"shape\":\"rect\",\"coords\":\"259,54,293,85\"},{\"shape\":\"rect\",\"coords\":\"261,138,294,177\"}]"} {"title":"y component of the displacement during a short interval","description":"Incorrect","type":"incorrect","color":"#333333","code":"[{\"shape\":\"rect\",\"coords\":\"261,102,298,129\"}]"}

Question

p1NiBtF6VrLPYnma5DzYJRS6ScQfEFbVOLnKcZNhIZvLe+1jLksETwpWpNsmpW8gGZOY+Q7gAhM=
{"title":"x component of the velocity vector v","description":"Incorrect","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"53,40,76,62\"},{\"shape\":\"poly\",\"coords\":\"82,133\"}]"} {"title":"x component of the displacement during a short time interval","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"279,21,301,46\"}]"} {"title":"y component of the velocity vector v","description":"Correct!","type":"correct","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"52,124,78,154\"},{\"shape\":\"poly\",\"coords\":\"113,132\"}]"} {"title":"elapsed time for the time interval","description":"Incorrect","type":"incorrect","color":"#000080","code":"[{\"shape\":\"rect\",\"coords\":\"259,54,293,85\"},{\"shape\":\"rect\",\"coords\":\"261,138,294,177\"}]"} {"title":"y component of the displacement during a short interval","description":"Incorrect","type":"incorrect","color":"#333333","code":"[{\"shape\":\"rect\",\"coords\":\"261,102,298,129\"}]"}

Question

k/2CBsohSYVPbfsQutvy0hog9ExsRq54EhD+oqdDRD5N8p+yQHgEEg==
{"title":"x component of the velocity vector v","description":"Incorrect","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"53,40,76,62\"},{\"shape\":\"poly\",\"coords\":\"82,133\"}]"} {"title":"x component of the displacement during a short time interval","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"279,21,301,46\"}]"} {"title":"y component of the velocity vector v","description":"Wrong","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"52,124,78,154\"},{\"shape\":\"poly\",\"coords\":\"113,132\"}]"} {"title":"elapsed time for the time interval","description":"Correct!","type":"correct","color":"#000080","code":"[{\"shape\":\"rect\",\"coords\":\"259,54,293,85\"},{\"shape\":\"rect\",\"coords\":\"261,138,294,177\"}]"} {"title":"y component of the displacement during a short interval","description":"Incorrect","type":"incorrect","color":"#333333","code":"[{\"shape\":\"rect\",\"coords\":\"261,102,298,129\"}]"}

Question

96lSGewswxIYCQjC37Jygj8D7pqGO5draswnyryvPG3N0RvS4vvLCZgNcjrKvSMH1R5XtMffqi/GmjjTiykAOEocxVw=
{"title":"x component of the velocity vector v","description":"Incorrect","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"53,40,76,62\"},{\"shape\":\"poly\",\"coords\":\"82,133\"}]"} {"title":"x component of the displacement during a short time interval","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"279,21,301,46\"}]"} {"title":"y component of the velocity vector v","description":"Wrong","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"52,124,78,154\"},{\"shape\":\"poly\",\"coords\":\"113,132\"}]"} {"title":"elapsed time for the time interval","description":"Incorrect","type":"incorrect","color":"#000080","code":"[{\"shape\":\"rect\",\"coords\":\"259,54,293,85\"},{\"shape\":\"rect\",\"coords\":\"261,138,294,177\"}]"} {"title":"y component of the displacement during a short interval","description":"Correct!","type":"correct","color":"#333333","code":"[{\"shape\":\"rect\",\"coords\":\"261,102,298,129\"}]"}

Review

Just like any \perpher vector, we can describe the velocity vector \(\vec{v}\) of an object in terms of its components. The \(x\) component of \(\vec{v}\), which we call \(v_x\), equals the \(x\) component of displacement (the change in the \(x\) coordinate during the time interval, \(\Delta{x} = x_2 - x_1\)) divided by the time interval \(\Delta{t} = t_2 - t_1\); we define \(v_y\), the \(y\) component of \(\vec{v}\), in a similar way.