NEET-XII-Physics
02: Physics and Mathematics
- #14Let
A→=5i→-4j→andB→=-7·5i→+6j→. Do we have
B→=kA→? Can we say
B→A→= k?Ans : If `` \stackrel{\to }{A}=5\stackrel{\to }{i}-4\stackrel{\to }{j}\mathrm{and}\stackrel{\to }{B}=-7·5\stackrel{\to }{i}+6\stackrel{\to }{j}``, then we have `` \stackrel{\to }{B}=k\stackrel{\to }{A}`` by putting the value of scalar k as `` -1.5``.
However, we cannot say that `` \frac{\stackrel{\to }{B}}{\stackrel{\to }{A}}`` = k, because a vector cannot be divided by other vectors, as vector division is not possible.
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