PAES FÍSICA | Análisis gráficos MRUV | Clase 13

Do you struggle to interpret parabolas in physics or to tell when an object is decelerating just by looking at a graph? Master graph analysis in uniformly accelerated motion (MRUV) once and for all and secure your points on the university entrance exam (PAES). 👇 ⏱️ CLASS CHAPTERS: 00:00 Intro and Welcome 01:10 Class Objectives 03:31 Review: Graphs in Uniform Rectilinear Motion (URM) 05:21 Slope and Area 07:45 The 3 Key Graphs 09:32 Units of Measurement 10:34 PhET Simulation: Origin 14:56 x-t Graph: Velocity (-) 17:32 Horizontal Segments 21:17 X-Axis Criterion in v-t 24:26 Piecewise Analysis in x-t 28:26 Introduction to Uniformly Accelerated Rectilinear Motion (UARM) 32:53 Simulation of Uniformly Accelerated Rectilinear Motion (UARM) 36:09 x-t Graph: The Parabola 40:31 UARM with Negative Values 46:33 Exponential Curves 50:40 The Powerful Graph: v-t 53:49 Slope = Acceleration 55:08 Area = Distance 58:42 Uniformly Accelerated Rectilinear Motion (Braking) Analysis 01:02:40 Parabola in Braking 01:06:20 Closing and 2026 Holidays 🔥 LEVEL UP NOW! Don't train with outdated material. Register for free to access practice tests in the official format and real-time feedback: 👉 https://www.puntajenacional.cl/ 📚 WANT THE COMPLETE MAP? Supplement your preparation with the Puntaje Nacional PAES Manuals for the 2027 admissions. Less filler, more strategy, and hundreds of exercises designed to train your eye for DEMRE distractors. 🛒 Get them here: https://tienda.puntajenacional.cl/ --- 📝 CLASS SUMMARY: We've reached one of the most crucial and daunting kinematics classes for the Physics PAES exam! In this fourteenth session with Professor Fabián, we move beyond the linearity of Uniform Rectilinear Motion (MRU) to delve into the complexity of Uniformly Accelerated Rectilinear Motion (MRUV), analyzing in detail how accelerations and decelerations are represented through their graphical components. We reiterate a golden rule: a graph is not a satellite map or a GPS! It's a mathematical tool for organizing and deciphering hard data. Through the interactive simulation PhET (Moving Man), we review how the choice of reference frame (Galileo's relativity) influences the results and overcome the fear of the negative sign, understanding that in physics it only indicates the direction of motion. We break down the three essential types of graphs: 1. Position-time (x-t): We identify why it translates into a quadratic function (parabola), learning to visually distinguish when a curve represents an exponential increase in speed (steeper curve) or deceleration (curve that flattens out horizontally). 2. Velocity-time (v-t): We study the most powerful graph in kinematics. We demonstrate why its slope is algebraically equivalent to acceleration and how to calculate the total distance traveled by geometrically decomposing the area under the curve into rectangles and right triangles. 3. Acceleration-time (a-t): We structure the reading of constant acceleration as a perfectly horizontal line parallel to the time axis. Finally, we establish the definitive criterion for differentiating between uniformly accelerated rectilinear motion (MRUA, where the graph moves away from the x-axis) and uniformly decelerated rectilinear motion (MRUR, where the graph moves towards the x-axis). We conclude the broadcast with the dates for the winter break, confirming the return to live classes for next Thursday, July 9th, with an intensive practice session. --- 📱 SHORT TRICKS, BIG RESULTS! Follow us on our social media channels and find key information about the test, application dates, tuition waivers, scholarships, and much more: • Instagram: @puntajenacional • TikTok: @puntajenacional #PuntajeNacional #PAES2026 #PAESPhysics #MRUV #GraphAnalysis #Kinematics #DEMRE #FreeUniversityPrep #Class13 #PhysicsFromZero