PPT-Momentum & Impulse

Pg 222 227 Momentum amp Impulse The driver of this race car walked away from the car without a scratch Luck had little to do with this fortunate outcome though a practical application of Newtons laws of motion by the engineers who designed the car and its safety equipment protected the driver from injury. Chapter 3, Section 7. Date:. HW: PTG #1-8, pg. 332. Learning Objective:. Explain collisions in terms of Newton’s Laws, momentum, and impulse. Success Criteria:. Define impulse. Explain conservation of momentum. Linear Momentum. Momentum is a measure of how hard it is to stop or turn a moving object.. p. = m. v. (single particle). P . = . Σ. p. i . (system of particles). Problem:. How fast must an electron move to have the same momentum as a proton moving at 300 m/s?. Chapter 7. 7.1 The Impulse-Momentum Theorem. This section deals with time-varying forces affecting the motion of objects. . The effects of these forces will be discussed using the concepts of . i. mpulse and linear momentum.. Physics 7. th. edition. Classroom Response System Questions. Chapter 7 Impulse and Momentum. Interactive Lecture Questions. . 7.1.1. An astronaut drops a golf ball that is initially at rest from a cliff on the surface of the moon. The ball falls freely under the influence of gravity. Which one of the following statements is true concerning the ball as it falls? Neglect any frictional effects.. https://. www.youtube.com/watch?v=hTZI-kpppuw. A truck rolling down a hill has more momentum than a roller skate with the same speed. But if the truck is at rest and the roller skate moves, then the skate has more momentum. Moving objects can have a large momentum if it has a large mass, a high speed or both.. Have you ever wondered…. How a tae kwon do expert can break a stack of cement blocks?. Why falling on a cement floor hurts more than falling on the grass?. Why a follow through is important in golf, baseball or boxing?. Excerpts . from . Chapters 9 and 11. Impulse and Momentum. Newton’s . 2nd. Law of motion can be rewritten by using the definition of . acceleration. as the change in . velocity. over the change in time.. You’re Quite Impulsive. A Review of What We Know About Motion. Chapters 2 & 3 introduced us to vectors such as displacement, velocity, and . acceleraton. No mass was included. Chapter 4 introduced forces and mass into the mix. (Linear) Momentum, p. ● . is mass times velocity. . . vector. !. . ● . . (p) = kg m/s. ► . a 1 kg object moving at 1000 m/s has the same momentum as a 1000 kg object moving at 1 m/s (p = 1000 kg m/s). Momentum = Mass x Velocity. p. =. mv. The SI unit for momentum is . kg·m. /s. Momentum and velocity are in the same . direction. Is a vector. Using the equation. p=. mv. At the same velocity, as mass increases – momentum increases. AP Physics 1. M. Dimler. What to Expect from this Unit. Momentum. Impulse. Impulse-Momentum Theorem. Conservation of Momentum. Collisions (Elastic, Inelastic, Perfectly Inelastic, and Explosion). Elastic Collisions-Conservation of KE. … to change equilibrium states!. We have seen that…. …. equilibrium . is a. self-sustained state. ;. We have seen that…. … equilibrium is a self-sustained state;. …. objects in equilibrium . by Zack Ridgway and Jeffrey Wan . Kinetic energy. Kinetic energy- energy of an object that it possesses due to its motion. . Common examples. A baseball thrown by a pitcher, although having a small mass, can have a large amount of kinetic energy due to its fast velocity.. Impulse and momentum. There are many situations in which the force acting on an object is not constant.. The force varies with time. Impulse and momentum. To describe how a . time varying force . affects the motion of an object, we need to use .