Thread: Average velocity equation?

If I am given the acceleration of 4 m/s(sqaured) and a total time of 12 m/s what formula would i use to find the average velocity?

Erm... 12 m/s is not a time.

Anyway, average velocity is .
See e.g. wiki.

Apparently you need a couple of assumptions.
Initial speed of zero and acceleration until 12 m/s or something like that.
With assumptions like that you could calculate and .

Originally Posted by ILikeSerena

Erm... 12 m/s is not a time.

Anyway, average velocity is .
See e.g. wiki.

sorry about that, but in my question I am not given the displacement!
Here is the question:

An airplane maintains a constant acceleration of 4 m/ssquared E as it speeds up from 16m/s t0 to 28 m/s E

what is the av. velocity?

Originally Posted by sakonpure6

sorry about that, but in my question I am not given the displacement!
Here is the question:

An airplane maintains a constant acceleration of 4 m/ssquared E as it speeds up from 16m/s t0 to 28 m/s E

what is the av. velocity?

Ah well, in that case you can simply take the average of the initial and the final speed.


Alternatively, you can calculate and .
But you'll get the same result.

thank you, much appreciated. Im new and some info needs to be sorted >.<!

Originally Posted by ILikeSerena

Ah well, in that case you can simply take the average of the initial and the final speed.

This is correct as long as the acceleration is constant as is, of course, the case here.

Alternatively, you can calculate and .
But you'll get the same result.

Apparently you need a couple of assumptions.

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