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Timeline for Can we add any two vectors?

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Sep 29, 2014 at 15:08 comment added David Hammen @User58220 - Nice find, but none of those three is published by Pradeep. They are all Indian, though (as is Pradeep). India apparently has rather lax copyright laws. There appears to be a lot of cut-and-paste across Indian textbook publishers. India also apparently has rather lax checking. The exact same question will appear in multiple books, but will sometimes have differing and conflicting answers. This could well the case here.
Sep 15, 2014 at 2:23 comment added user13267 To put it simply, you can only add quantities with the same units, example, weight to weight (or mass to mass), time to time, money to money, etc. It is the same thing with vectors. Acceleration and velocity are both vectors, but with different units, so should not be added.
Sep 15, 2014 at 0:18 vote accept geek101
Sep 15, 2014 at 0:18 vote accept geek101
Sep 15, 2014 at 0:18
Sep 14, 2014 at 20:34 answer added Fattie timeline score: 3
Sep 14, 2014 at 20:22 comment added DJohnM FWIW: Searching in Google Books for state with reasons whether the following statements algebraic operations with scalar and vector quantities are meaningful produces three textbooks with the question in question...
Sep 14, 2014 at 19:59 history edited rob
edited tags
Sep 14, 2014 at 17:12 comment added geek101 the subject area is physics
Sep 14, 2014 at 16:39 comment added David Hammen Good gosh. Please give the title of the class, the subject area (mathematics or physics), and the title of the book. Predeep is an Indian publisher of many textbooks. Saying the book is Pradeep says nothing.
Sep 14, 2014 at 16:31 comment added geek101 @DavidHammen the chapter is motion in a plane class 11. book is pradeep
Sep 14, 2014 at 15:55 comment added David Hammen It would be very good if you clarified the question. I still suspect you are misreading. What is the name of the book? The name of the class? I suspect the answer to both questions is "Linear Algebra."
Sep 14, 2014 at 15:43 answer added David Hammen timeline score: 8
Sep 14, 2014 at 15:35 comment added geek101 so can we add two vectors with different dimensions? @DavidHammen
Sep 14, 2014 at 15:31 answer added fibonatic timeline score: 0
Sep 14, 2014 at 15:21 comment added David Hammen No, we can't think that. That is precisely the mathematical definition of a vector. Mathematicians and physicists disagree on what constitutes a "vector". More to the point, mathematicians do not worry about units.
Sep 14, 2014 at 15:16 comment added geek101 i think it is a misprint then? @DavidHammen
Sep 14, 2014 at 15:13 comment added geek101 clearly a and b are wrong my book says e is correct
Sep 14, 2014 at 15:12 comment added geek101 (A)adding any two scalars ,(b) adding scalar to vector of same dimensions ,(C)multiplying a vector by a scalar,(d)multiplying any two scalars, (e) adding any two vectors, (f) adding a component of a vector to the same vector
Sep 14, 2014 at 15:10 comment added geek101 state with reasons whether the following statements algebraic operations with scalar and vector quantities are meaningful-
Sep 14, 2014 at 15:09 comment added geek101 there is actually a question which is as follows-
Sep 14, 2014 at 15:06 comment added David Hammen A direct quote from your book would be nice. I suspect you are misreading.
Sep 14, 2014 at 15:05 history edited geek101 CC BY-SA 3.0
deleted 4 characters in body
Sep 14, 2014 at 15:05 comment added geek101 sorry it was wrongly edited
Sep 14, 2014 at 15:03 comment added David Hammen I'm confused by your question and your comment to the first answer. You wrote that your book "says it is not true" (that one can add any two vectors), and the one answer so far says one cannot add an acceleration vector and a velocity vector. So what's the problem? What specifically is it that makes think there is a misprint in your textbook?
S Sep 14, 2014 at 15:00 history suggested bobie CC BY-SA 3.0
fixed some typos
Sep 14, 2014 at 15:00 review Suggested edits
S Sep 14, 2014 at 15:00
Sep 14, 2014 at 14:57 answer added 299792458 timeline score: 8
Sep 14, 2014 at 14:55 comment added lemon en.wikipedia.org/wiki/Dimensional_analysis
Sep 14, 2014 at 14:54 history edited Kyle Kanos CC BY-SA 3.0
formatting
Sep 14, 2014 at 14:53 comment added dmckee --- ex-moderator kitten What would it mean to have added acceleartion and velocity. What physical quantity could that possible correspond to. Note, however, theat these consideration have nothing to do with the scalar of vector nature of the quantities and everything to do with what the quantities are (i.e. units).
Sep 14, 2014 at 14:52 comment added pfnuesel Can you add 3 kg to 7 $? Why should that work for vectors? Or are you talking about polar and axial vectors?
Sep 14, 2014 at 14:52 comment added HDE 226868 It is correct that you cannot add velocity and acceleration, because they are different quantities with different units ($m/s$ and $m/s^2$).
Sep 14, 2014 at 14:49 history asked geek101 CC BY-SA 3.0