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Q.

How we got the formula v+u/t=average velocity

Asked by soumya, 16 Jul '09 10:13 pm
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1.

It is (v+u)/2 = average velocity (you wrote t in place of 2). Before telling the derivation, let me tell you that this formula is correct only when the acceleration is constant. Derivation: Let u = initial velocity i.e. velocity at time 0 v = velocity at time t S = displacement from time 0 to time t a = acceleration For constant acceleration:- S = ut + 1/2 *at^2 Dividing both sides by t, S/t = u + 1/2 * at By definition, displacement/time is average velocity Therefore average velocity = u + 1/2 *at = (2u + at)/2 = (u+at + u)/2 But v = u+at Therefore average velocity = (v+u)/2
Answered by Knowledge Software, 17 Jul '09 12:13 am

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2.

The average velocity v of an object moving through a displacement (d) during a time interval (t) is described by the formula: v=d/t where, v = Average Velocity d = displacement t = time
Answered by Pardeep kapoor, 16 Jul '09 10:26 pm

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3.

Ask a teacher or refer ur physics book. The real derivations are difficult to write down here.
Answered by Ashish Mishra, 16 Jul '09 11:25 pm

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4.

By using algebra!!
Answered by dharamender nebhnani, 16 Jul '09 10:25 pm

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