Solving Physics Problems with Kinematic Equations

Miacademy & MiaPrep Learning Channel

This video serves as a practical guide for high school physics students on how to apply kinematic equations to solve one-dimensional motion problems. Building on a previous lesson that introduced the equations, the narrator outlines a systematic five-step approach to problem-solving: sketching the scenario, identifying knowns and unknowns, selecting the appropriate equation, plugging in values to solve, and verifying that the answer makes sense. The video models this process through three distinct practice problems involving dragsters. The content focuses heavily on the procedural aspects of physics problems, including critical mathematical skills like algebraic rearrangement, unit conversions (miles to meters), and significant figures. It specifically addresses how to handle implicit information—such as recognizing that "from rest" means an initial velocity of zero—and how to select the correct equation based on the variables provided. The examples progress in difficulty, starting with calculating average velocity, moving to finding final velocity with unit conversions and square roots, and concluding with calculating acceleration. For educators, this resource provides a clear, modeled instruction on the "how-to" of physics calculations, moving beyond theory to application. It effectively demonstrates the cognitive steps experts take when approaching word problems, making it an excellent tool for scaffolding independent practice. The emphasis on checking units and significant figures reinforces good scientific habits, while the step-by-step walkthroughs allow teachers to pause and let students attempt calculations before seeing the solution.