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- Homework Statement
- I've recently started Sears and Zemansky's "University Physics"... Everything was fine until pg. 42.

- Relevant Equations
- ...

Initially we are given the statement V

"We can also get a second expression for V

For the time interval from 0 to t:

V

I can't for the life of me figure out where the above equation comes from.

My Apologies if homework is the wrong place for this.

_{av}= (x-x_{0})/t, so far so good. But, we encounter the following paragraph..."We can also get a second expression for V

_{av}that is valid only when the acceleration is constant, so that the v-t graph is a straight line (as in Fig 2-14 - [I've omitted the graph here, it's a v-t graph with constant acceleration]) and the velocity changes at a constant rate.*In this case the average velocity during any time interval is imply the arithmetic average of the velocities at the beginning and end of the interval*."For the time interval from 0 to t:

V

_{av}= (v_{0}+ v)/2I can't for the life of me figure out where the above equation comes from.

My Apologies if homework is the wrong place for this.