I am new to this forum... nd Also new to physics... yesterday our teacher gives lecture about Vectors... but I can't understand any thing... doesn't know why ????
I want to ask that what are vectors and... Why we use vectors ?????
|
I am new to this forum... nd Also new to physics... yesterday our teacher gives lecture about Vectors... but I can't understand any thing... doesn't know why ????
I want to ask that what are vectors and... Why we use vectors ?????
Vectors are quantities which have both magnitude and direction. You can picture them as arrows - an arrow has a certain length, and points in a certain direction. That's what a vector is.
We use them in physics because many of the things we investigate have not just magnitude, but direction as well. Trivial example : the velocity of an object. When an object moves it has both a certain speed, and it moves in a certain direction. You could of course treat those separately, but it turns out it is much easier to combine them both into a vector - the velocity.
what is mean by addition of vectors and it's components...
what are it's components...?
Scalar multipliers of a privileged set called "basis vectors".
One way to represent a vector is to give a set of standard numbers ("scalars"). For a 2D space, we give two, one for the x-axis and one for the y-axis. If you draw an arrow between the 0,0 point to the point given by your vector, you have an arrow of a certain length in a certain direction. These numbers are the components.
« questions on einstein's theories and related topics | question on creativity » |