Question

average velocity and average speed formula

Answer 1

Average velovity = Displacement / timetaken
and Average speed = Distance/timetaken

Answer 2

i know that i want to know it in terms of V2 , V1 , T2 , T1 @sauravshakya

Answer 3

It will be the Harmonic mean..

Answer 4

what is harmonic mean ?

Answer 5

\[Average \; Velocity = \frac{2v_1 \cdot v_2}{v_1 + v_2}\]

Answer 6

multiply 2v1*v2

Answer 7

Meaning ??

Answer 8

your numerator

Answer 9

See:
If you travel x distance in \(t_1\) time and another x distance in \(t_2 \) seconds:

Total Distance = x + x = 2x

Total Time = \(\large \frac{x}{v_1} + \frac{x}{v_2}\)

So:

\[\large Av. Velocity = \frac{2x}{\frac{x}{v_1} + \frac{x}{v_2}} \implies \frac{2 \cdot v_1 \cdot v_2}{v_1 + v_2}\]

Answer 10

yes numerator is 2 multiplied by \(v_1\) multiplied by \(v_2\)..

Answer 11

but in some of my guides i've seen that it is V2 - V1 / T2 - T1 , is that right too ?

Answer 12

and in some V1 + V2 / T2 + T1 are there so much formulas for avg velocity ?

Answer 13

Yes they are also right..

Answer 14

you mean i can use any one i want in these three ?

Answer 15

\[Average \; Velocity = \frac{Change \; In \; Displacement}{Change \; In \; Time}\]

Answer 16

It depends on situations..

Answer 17

okay !

Answer 18

like what .. can you explan it more please ?