**Unit 6: 1-Dimensional
Kinematics**

**Problem Set A**

**Overview:**

Problem Set A targets your ability to use the average velocity and
average acceleration equations. There are a few routine problems and
several more complicated multi-step problems. The equations for
average velocity (v_{ave}) and average acceleration
(a_{ave}) are stated below.

An inspection of these equations shows that there are clear mathematical relationships between the following sets of quantities:

From the top equation: |
average velocity (v |

From the bottom equation: |
average acceleration (a |

Of the fifteen problems on the set, a few involve rather routine calculations while several involve more complicated multi-step analysis. Whether routine or difficult, it is always a worthy endeavor to practice the habits of a effective problem-solver. These habits are described below.

** Habits of a Effective
Problem-Solver:**

An effective problem solver by habit approaches a physics problem in a manner that reflects a collection of disciplined habits. While not every effective problem solver employs the same approach, they all have habits which they share in common. These habits are described briefly here. An effective problem-solver ...

- ... reads the problem carefully and develops a mental picture of the physical situation. If needed, they sketch a simple diagram of the physical situation to help visualize it.
- ... Identifies the known and unknown quantities in an
organized manner, often times recording them on the diagram
iteself. They equate given values to the symbols used to represent
the corresponding quantity (e.g., v
_{i}= 0 m/s, a = 2.67 m/s/s, v_{f}= ???). - ... plot a strategy for solving for the unknown quantity; the strategy will typically center around the use of physics equations.
- ... identify the appropriate formula(s) to use, often times writing them down. Where needed, they perform the needed conversion of quantities into the proper unit.
- ... perform substitutions and algebraic manipulations in order to solve for the unknown quantity.

To be successful on this problem set, you will need to be able to:

- give attention to the units of stated quantities and peform proper conversions.
- utilize the average speed and average velocity equations effectively.
- know that a rebounding situation results in a final velocity which has the opposite direction (i.e., mathematical sign) than the initial velocity.
- employ the habits of a good problem-solver.

**Additional Readings/Study
Aids:**

The following pages from The Physics Classroom tutorial may serve to be useful in assisting you in the understanding of the concepts and mathematics associated with these problems.

View Sample Problem Set.

Return to: Set A Overview Page || Audio Help Home Page || Set A Sample Problems

Audio Help for Problem: 1 || 2 || 3 || 4 || 5 || 6 || 7 || 8 || 9 || 10 || 11 || 12 || 13 || 14 || 15 ||

Retrieve info about: Problem-Solving || Audio Help || Technical Requirements || CD-ROM

Return to: ChemPhys Problem Set Page || CP 173 Home || CP 273 Home || The Physics Classroom