Question

what mean by average velocity.

Answer 1

         average velocity means the total displacement divided by the total time taken.

         this is different from the average speed as velocity is a vector.  when we take average we need to take into account the directions of velocity at different times.

     if an object travels for time t1  with a uniform velocity $\vec{v1}$  and for time t2  with a uniform velocity  of  $\vec{v2}$    then  the average velocity  is
$\vec{v}=\frac{t1\ \vec{v1}\ +\ t2\ \vec{v2}}{t1+t2}$

     if a person travels for  1 hour  covering a distance of 10 km in a straightline towards the North and then returns along the same straight line after 1 hour,  then 

      v1 vector is 10kmph  towards North.
     v2 vector is  10 km ph towards South.
  average velocity is  0.

    Average velocity is the net displacement divided by the time interval.

Answer 2

Answer:

Average velocity is given as total displacement by total time taken

v = S / t

here ,

v is average velocity

S is displacement

t is time

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