You'll apply the formal problemsolving method in this assignment.
For any assignment labeled P###, there are two possible protocols for presenting your solutions. The appropriate protocol will be specified for each assignment or, in some cases, for each problem. Here are the two protocols.
Protocol 
How to present your solutions 
Formal 
Use this method. 
As directed 
Follow the instructions provided with the problem or problem assignment. 


In the example problem, you'll notice that the steps of the solutions
are written one below the other. There's a good reason for
this standard practice. It makes it much easier to follow
the solution than if several steps were written on a single line. Use the method of arranging your steps down the page rather than
across it. Also, write clearly and leave double spaces between
equations. All of these things will make it easier to check
your paper and will make it much less likely that you will lose
credit for work that the teacher isn't able to read or to find quickly.

Formal: You jog at a velocity of v_{1} = 6.0 mi/h
for 5.0 mi; then you jump into a car and drive for another 5.0
mi. With what velocity, v_{2}, must you
drive if your average velocity, v_{av}, for
the entire 10.0 miles is to be 11 mi/h? Here's
the rubric the instructor will use to evaluate your work.

As directed: Why isn't it possible for v_{av} to be 12
mi/h for the problem situation above? Begin your answer by starting
with the algebraic equation for v_{2} that
you solved for in problem 1. Then tell the value that the equation
gives for v_{av} = 12 mi/h. Physically, what
would that mean? Complete your answer with an explanation in
sentence form in terms of time, displacement, and velocity.
