You’re Quite Impulsive

Slides:



Advertisements
Similar presentations
CHAPTER 8 Momentum & Impulse.  Momentum is a product of mass and velocity  Momentum is a vector (magnitude and direction)  p = m v  Measured in kg.
Advertisements

FORCE Chapter 10 Text. Force A push or a pull in a certain direction SI Unit = Newton (N)
Chapter 9: Impulse, Momentum, and Collisions  Up to now we have considered forces which have a constant value (except the spring) throughout the motion.
Linear Impulse − Momentum
Chapter 12 Section 3 Notes. Force: a push or pull on an object Force is not something that an object possesses An object only exerts force on another.
Physics 2.2.
Chapter 6 Momentum and Collisions. Chapter Objectives Define linear momentum Compare the momentum of different objects Describe impulse Conservation of.
General Physics Momentum and Impulse Recall Newton’s First Law  Inertia was introduced and is the reason that objects follow the first law.  What is.
Momentum and Impulse Review 1.The velocity of a moving mass is called? ans: momentum 2.Force applied in a period of time is called? ans: impulse 3. The.
Motion Summary.  Vectors & Scalars  Displacement, Velocity, Acceleration  Equations of motion  Relative motion.
Newton’s Third Law of Motion
Motion Revision Quiz questions. Round 1 1.Which of the following is a scalar measurement? displacement distance velocity.
Aim: How can we distinguish between a vector and scalar quantity? Do Now: What is the distance from A to B? Describe how a helicopter would know how to.
10/3 Energy Intro  Text: Chapter 6 Energy  HW 10/3 “2nd Law vs. Energy” due Monday 10/7  Tomorrow, Potential Energy and Projectile Motion  Exam 2 Thursday,
Momentum and Impulse. Answer Me!!! Forces cause objects to start moving. What keeps an object moving after the force is no longer applied?
1 st Semester Exam Review. Math and Metrics Sig Fig Rules: 505 – zero is significant 500 – zeroes not significant 0.05 – zeroes not significant 5.00 –
Energy Momentum, Collisions, Impulse. Momentum A measure of how hard it is to stop a moving object A measure of how hard it is to stop a moving object.
The product of mass and velocity of a body is called momentum. Force and Laws of Motion Momentum Mathematically, Momentum = mass × velocity P = mv It is.
Newton’s Laws of Motion
Concept Summary. Momentum  Momentum is what Newton called the “quantity of motion” of an object.
Momentum and Impulse. March 24, 2009 Momentum and Momentum Conservation  Momentum  Impulse  Conservation of Momentum  Collision in 1-D  Collision.
Momentum.
Momentum p = m v Momentum = mass * velocity momentum is directly proportional to an object's mass momentum is directly proportional to the object's velocity.
Work Readings: Chapter 11.
Momentum A measure of how difficult it is to change an object’s motion (to make it stop or swerve). On what does this difficulty depend? –More mass; more.
Momentum and Impulse Unit 4: Momentum, Work and Energy Physics 11.
Momentum. The p = m = mass v = velocity Unit: Vector Direction of momentum is determined by the direction of the.
Ch. 9: Linear Momentum & Collisions. THE COURSE THEME: NEWTON’S LAWS OF MOTION! Chs. 5 & 6: Motion analysis with Forces. Chs. 7 & 8: Alternative analysis.
Momentum & Impulse and Projectile Motion. Momentum What is momentum? It is the quantity of motion of a moving body, measured as a product of its mass.
Newton’s Second Law of Motion. 2 nd Law of Motion  The net (total) force of an object is equal to the product of its acceleration and its mass.  Force.
Impulse & Momentum Physics 11. Momentum  The product of a particle’s mass and velocity is called the momentum of the particle:  Momentum is a vector,
Mechanics The study of Physics begins with mechanics. Mechanics is the branch of physics that focuses on the motion of objects and the forces that cause.
A –Level Physics: Further Mechanics- Inelastic and Elastic Collisions
Newton’s laws of motion
Momentum and Impulse.
Vector & Scalar Quantities
Unit 4: Momentum & Impulse
Concept Summary Batesville High School Physics
Momentum and Impulse.
Momentum:.
Momentum.
THIS IS JEOPARDY.
Concept Summary Batesville High School Physics
PHYSICS 103: Lecture 13 Review of HW Momentum Agenda for Today:
Momentum and Impulse.
Chapter 7 Kinetic Energy and Work
KINETIC ENERGY: ENERGY OF MOTION
Center of Mass & Linear Momentum
Momentum.
Chapter 7 Kinetic Energy and Work
Kinetic Energy and Work
PRINCIPLE OF LINEAR IMPULSE AND MOMENTUM
IMPULSE AND MOMENTUM When ever things collide, I’ve heard,
MOMENTUM (p) is defined as the product of the mass and velocity -is based on Newton’s 2nd Law F = m a F = m Δv t F t = m Δv IMPULSE MOMENTUM.
Semester Review Jeopardy.
As we watch this video….. think about these questions:
SCI 340 L20 momentum and impulse the quantity of motion
Impulse and Momentum Readings: Chapter 9.
Momentum and Impulse SPH4U.
Impulse – Change of Momentum theorem
Concept Summary Batesville High School Physics
Formative Assessment.
Scalars and Vectors.
Chapter B2 – Impulse and Momentum
Kinematics: Displacement and Velocity
Newton’s Laws of Motion
Momentum & Impulse and Projectile Motion
Momentum and Impulse Lesson 1.
Momentum and Impulse.
Presentation transcript:

You’re Quite Impulsive An Introduction to Impulse and Momentum

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 Chapter 5 has brought the concept of energy to motion. It includes mass and motion but not as vectors Chapter 6 will combine the vectors of motion with mass quantities

Where (and why) We Start Vector Motion Energy Analysis A ball is thrown up at 25m/s at 53o above horizontal. Find final velocity. How we solve: Strengths: Weaknesses: A ball is thrown up at 25m/s at 53o above horizontal. Find final velocity. How we solve: Strengths: Weaknesses:

How we can combine both strengths We need a quantity that expresses motion with a mass component and a directional component. Welcome to the world of impulse and momentum! Impulse: force times time- force is a vector; time is not. It expresses an effort and duration. Units are Ns or kgm/s Momentum: mass times velocity- mass is scalar; velocity is vector. It includes direction and size. Units are kgm/s or Ns.

How Momentum and Impulse relate As an object moves with a velocity it has a “quantity” of motion that relates to its size and motion. This is momentum (m x v) Newton’s 2nd law tells us that an outside force will create a proportional velocity change. The longer the force acts the more the change in velocity. So, the force acting for a time creates a m-v (momentum) change. How Momentum and Impulse relate Momentum= mass x velocity Velocity changes are expressed as accelerations: acc = Dv/Dt Accelerations are created by forces acting on masses The “longer” the force acts the more the object accelerates Force = mass x (Dv / Dt) After a little algebra Force x Dt = mass x Dv Impulses create momentum changes

A Few Examples If a 25.0 kg cart rolls at 15 m/s east and a 200. N force (west) acts on it for 30.0 seconds, (a) what is its initial momentum and kinetic energy? (b) what is its final momentum, velocity and kinetic energy? A 50.0 kg object travels at 30.0 m/s east. A 100.0 N (south) force acts on the object for 15.0 seconds. (a) What is its final momentum? What is its final velocity? What is its final kinetic energy?