# A Problem Solving Framework - PowerPoint PPT Presentation

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A Problem Solving Framework. Based on the work of Heller & Heller University of Minnesota. The traditional “GUESS” method. Givens - Identify the “given” information Unknown - Identify what is wanted Equation - Select equation for solution Solution - Solve equation for unknown

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A Problem Solving Framework

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## A Problem Solving Framework

Based on the work of

Heller & Heller

University of Minnesota

• Givens - Identify the “given” information

• Unknown - Identify what is wanted

• Equation - Select equation for solution

• Solution - Solve equation for unknown

• Survey - Make certain solution is realistic

### Using the Competent Problem Solver Answer Sheet: Example 1

• An airplane lands on a runway at 175mph. The plane uniformly slows to a stop over a distance of 4049ft. What is the average acceleration in meters/second squared? How many g’s does this represent?

### Using the Competent Problem Solver Answer Sheet: Example 2

• A car’s initial mass and velocity are m and v respectively. A truck’s mass and velocity are M and -V respectively. Assuming a head-on collision where they stick together, what is the speed of the vehicles immediately after the collision? The truck is twice the mass of the car; the speed of the car is one-half that of the truck.

### Using the Competent Problem Solver Answer Sheet: Example 3

• A toy rocket leaves the surface of the Earth with an acceleration of 35m/s2. After 1.3s, the rocket engine expires. Assuming no wind resistance as it coasts upward, how high does the rocket go?