Question

Q2. A body moves with initial velocity u and after t second its final velocity becomes v.
write the formula to find its average velocity.
​

Answer 1

hey friends,

◆we know that Average velocity

= {displacement }/time interval

here , displacement (s) = ut + 1/2 at^2 ---(1)

=) time (t) = t

◆average velocity = S/t

= (ut + 1/2 at^2)/t

= u + 1/2 at ---------(2)

and we can also deduse this into another equation,

=) we know that , V = u + at

=) at = v - u -----------(3)

put value of " at" in eqn (2)

◆ average velocity = u + 1/2 at

= u + 1/2 (v - u )

=) taking LCM

=( 2u + v -u )/2

=( v + u )/2

◆average velocity = (v + u )/ 2

=) This is most common formula for finding average velocity , but remember that , This formula is valid only if acceleration is constant otherwise this formula is not valid .

Answer 2

Answer:

Average velocity = (u+v)/2

The sum of the initial and final velocity is divided by 2 to find the average.

Step-by-step explanation:

Initial velocity = u

Final velocity = v

Average = (Initial Velocity + Final velocity)/2

               = (u+v)/2

HOPE IT HELPS,

PLEASE THANK AND MARK AS BRAINLIEST.