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AP Physics with Hansenator - Momentum Lesson

![APPhysicsLogo.png](https://steemitimages.com/DQmYBZpMRdLudavf9ypwANNhjnEpzAEhWG8ZsV2p9UuM19a/APPhysicsLogo.png) ### Momentum ![](https://steemitimages.com/DQmRjdidaXnMjr4tQdozsngoaL5osxFg5sjxvrZ3ZbtPsCP/image.png) * Conservation of Momentum problems are situational. It depends on the number of objects. For example, if two objects collide and stick together they become one object with combined mass, the equation: ![](https://steemitimages.com/DQmUEVh2ugb2WhsrDsV9ahcBcHbquuLCK5vT8ggv7oxZn37/image.png) ### Example 1 Two cars travelling in opposite directions crash. Car 1 travelling left at 25 m/s with mass 2400 kg and Car 2 travelling right at 15 m/s with mass 1800 kg. (a) If the cars stick together, what is their final speed? (b) If Car 1 bounces back at 5 m/s, what is the final speed of car two and in which direction? ![Capture.PNG](https://steemitimages.com/DQmSpECLomrM4vwqK8eVrq3xvtYotrCYyShtyeta12tJog1/Capture.PNG) ### Where does the impulse equation come from? ![Capture2.PNG](https://steemitimages.com/DQmZMjpaBSknWk6vdNMzDAXW2bBNrqpBQj73Z2DrnkEqQ4q/Capture2.PNG) ### Example 2 A 2000 kg car is travelling at 20 m/s and stops moving over a 10 second period. What was the magnitude of the average breaking force? ![Capture3.PNG](https://steemitimages.com/DQme3QfuosdxbhQRJZeA9Asr4Qsw7yrW1xgAU1K38uTTXwS/Capture3.PNG) ### Example 3 A mass of 2 kg is moving at a speed of 10 m/s along a horizontal, frictionless surface. It collides, and sticks, with a 3 kg mass moving in the same direction at 5 m/s. What is the final velocity of the system after the collision? What percentage of kinetic energy is lost in the collision? ![Capture4.PNG](https://steemitimages.com/DQmX5rkpwrUVKEWeT37WvwJFbSi7rTBiYnRYbQSj6UBkjME/Capture4.PNG) ![BAR.png](https://steemitimages.com/DQmV1TfqJ7SzYtEtt6pxAAzFGDxT7qr96nBunRh8V5wiMPv/BAR.png) #### All SteemitEducation Posts ###### Physics Kinematics Video, Circular Motion Video, Forces in 1 & 2 Dimensions Videos, Kinematics Full Lesson, Circular Motion and Gravitation Full Lesson, Kinematics and Forces Quiz, Forces in 1-Dimension, Forces in 2-Dimensions, Basic Physics, Kinematics, and Forces Review, AP Physics Midterm Exam, AP Physics Midterm Exam Solutions , Kinematics and Forces Quiz ###### Computer Science 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 ###### SAT Asymptotes, Composite Functions, Contest 1 - Area, Contest 1 – Winners and Solution, PEMDAS, Systems of Equations, Functions, Exponents, Contest 2 - More Functions, Contest 2 – Winners and Solution, Percents, The Interest Equation, All About Division, Contest 3 - Factoring, Contest 3 – Winners and Solution, Fractional and Negative Exponents, Basic Trig, Contest 4 - Math Vocab, Contest - 5, Contest 5 – Winners and Solution, Contest 6, Contest 6 – Winners and Solution ###### General Math Basics of Algebra, Trigonometry Video, Proof of Quadratic Formula, Factoring Video, Unions and Intersections, Surface Area of a Cylinder, Substitution Video, Combinatorics Basics ###### Graphing from Algebra to Calculus Algebra 1, Algebra 2, Pre-Calculus, Calculus ###### Piloting Airplanes Introduction, Preflight, Requirements, Instruments, Take-Offs and Landings, Why a Plane Can Fly, Reading the Runway, Maneuvers ###### Other Engineering (Isometric) Drawing, Pressure & SCUBA Diving ![BAR.png](https://steemitimages.com/DQmV1TfqJ7SzYtEtt6pxAAzFGDxT7qr96nBunRh8V5wiMPv/BAR.png) Thank you for your views Steemers! The support is much appreciated! Learn much and best wishes! Your pal ~ hansenator ![STMEdu.gif](https://steemitimages.com/DQmVM1RNSZQpF6FNR3FM19o1uxAsSPYQCM4rpKpVvHpAc7L/STMEdu.gif) ![PaintGIF.gif](https://steemitimages.com/DQmeAZRnJ7VY2awbJNqX2f7CVFxoZCpi9UXTtVdcKYZuHuo/PaintGIF.gif)