Problem Solving Strategy (PSS)On problems, it is important to show how you reasoned from the information given in the problem and key physics ideas to your final answer. The correct final answer with units is only worth 1-3 points. The remainder of the points are given for the quality of your solution. You are expected to include the following to receive full credit:

Prepare• Identify the Physics: State explicitly which physics principle apply to the problem

situation and that you will use to solve the problem• Drawing a Picture: Draw at least one picture to visualize the physics of the

problem and define your variables and constants. For motion problems this could be a motion diagram, motion graph, or pictorial diagram (Friday)

• Collecting Necessary Information: State all the information given in the problem with correct units. Include preliminary calculations such as unit conversions

• Assume/Observe: State assumptions or observations that would be useful

Solve• Start with key equation(s) in symbol form• Solve for the unknown quantity in symbols before numeric calculations• Then substitute numbers with units and calculate the numeric answer

Assess• Check to see if your answer is reasonable• Does it answer the question that was asked• Does it have the right units?

Solving Problems - Prepare (also identify key physics)

Solving Problems (continued)