What is displacement and velocity?

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Originally Posted by sheshan

What is displacement and velocity?

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Displacement is a vector quantity that specifes an object's movement relative to some starting position. If you walk 3 meters east and then 4 meters west your total displacement is 1 meter west.

Velocity is a vector quantity that specifes the rate of change of an object's displacement. If is the displacement vector as a function of time then the instantaneous velocity vector is:



The average velocity of an object over a period is:

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this is all about
initial velocity
final velosity
acceleration constant
time
relation between them is

there are two types of displacement
velocity constant that is simple:
the other one is acceleration constant:
so

I'm going to approach this question as simple as possible. I'm assuming you have just started learning the laws of motion or Newtons laws or something like that, so here is how an Australian would answer the question.

Displacement is a vector quantity,( Vector quantity is just stating direction, example: 100m,east.
The formula is Δx=x2-x1
Velocity is the same thing as speed but just stating direction. Its know as a vector quantity as well.
Example: 100ms-1 east.
The formula for average velocity is Vav=Δx/Δt
where Δx means change in displacement and Δt is the change in time.