Impulse and Momentum Collisions and conservation of momentum

Slides:

Advertisements

Similar presentations

Aim: How can we apply conservation of momentum to collisions? Aim: How can we apply conservation of momentum to collisions? Identify conservation laws.

Advertisements

Momentum and Impulse. What is Momentum? Momentum – The product of the mass and velocity of an object. Has magnitude and direction. Momentum = p = mv P.

Momentum and Impulse.

Linear Impulse − Momentum

Conservation of Momentum The sum of the momentums of two bodies before they collide is equal to the sum of their momentums after they collide if there.

Q8.1 A ball (mass 1.0 kg) is initially moving to the left at 30 m/s. After hitting the wall, the ball is moving to the right at 20 m/s. What is the impulse.

Chapter 7 Page  Mass in motion  Inertia in motion  It is a vector quantity 2.

Warm up. Physics Honors AB –Day 1/12/15-1/13/15 Momentum and Impulse.

Aim: What is the law of conservation of momentum? Do Now: A 20 kg object traveling at 20 m/s stops in 6 s. What is the change in momentum? Δp = mΔv Δp.

Momentum and Collisions

Chapter 7 Impulse and Momentum.

Momentum and Impulse.

1.4 MOMENTUM IN TWO DIMENSIONS. Momentum momentum of an object to be the product of mass (m) and velocity (v). Momentum is a vector quantity with SI Units.

Chapter 6: Momentum and Collisions!

Gravitation Chapter 7. Planetary Motion and Gravitation Kepler discovered the laws that describe the motions of every planet and satellite. Kepler’s first.

AP Physics I.D Impulse and Momentum. 7.1 Impulse-Momentum Theorem.

Momentum is a vector quantity That is defined as the product Of an object’s mass and velocity. p = mv.

Section 1 momentum and collisions

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.

Momentum Momentum is defined as “Inertia in Motion” p = mv.

Momentum  Momentum is what Newton called the “quantity of motion” of an object.

Chapter 9: Momentum and Conservation Newton’s Laws applied.

Do Now: Who was the best teacher you ever had? What was it about that person and their class that made an impact on you?

Today: Momentum – chapter 9 11/03 Finish momentum & review for exam 11/8 Exam 2 (5 – 8) 11/10 Rotation 11/15 Gravity 11/17 Waves & Sound 11/22 Temperature.

1 Momentum and Its Conservation Or How I Learned to Love Collisions.

Momentum and Its Conservation LEQ: What is Momentum?

LINEAR MOMENTUM: A.MOMENTUM – A vector quantity defined as the product of an object’s mass and velocity B. FORMULA – momentum = mass x velocity p = m x.

Momentum and Impulse. Answer Me!!! Forces cause objects to start moving. What keeps an object moving after the force is no longer applied?

Pre-AP Physics: Momentum and Impulse. Agenda 4/1 – 4/2 1. Introduction to Momentum Mini-Lab 2. Momentum Notes 3. Momentum Practice HW: Finish Momentum.

P = mv F ∆ t = p f - p i p Ci + p Di = p Cf + p Df.

We define the Momentum of an object as: Momentum = mass x velocity p = m v Momentum is measured in kg ms -1 Momentum is a vector quantity. (size and direction)

Chapter 7 Impulse and Momentum. 7.1 The Impulse-Momentum Theorem DEFINITION OF IMPULSE The impulse of a force is the product of the average force and.

Momentum, impulse, and collisions Chapter 8 Sections 1-5.

Momentum Introduction to Momentum. What is Momentum? The quantity of motion of a moving body Depends on mass and velocity Measured by multiplying mass.

Would you rather be hit by a tennis ball or a bowling ball?

1 Work, Power, Energy Glencoe Chapters 9,10,11. 2 Ch 9 assignments In class samples: 1,2,4,13,15 Assigned problems 7-9,17,20.

Momentum is a vector quantity That is defined as the product Of an object’s mass and velocity. p = mv.

Momentum and Collisions Momentum and Impulse  The momentum of an object is the product of its mass and velocity: p=mv  Units of momentum: kg·m/s.

We will be playing Jeopardy today! Please come up with a team name and write it on the board above your team number.

Impulse, Momentum and Collisions. momentum = mass x velocity p = mv units: kgm/s or Ns.

Momentum and Impulse: Lesson 3.  It`s not how fast you are going: it is how fast you stop  To reduce the impact force, increase the stopping distance.

1. How does the change in momentum compare between a quick stop (collision) and a controlled stop (braking) from the same velocity? Why?

Physics Section 6.3 Apply the physics of collisions Inelastic collision – two objects stick together after colliding. The two objects become one object.

Conservation of Momentum. For a collision occurring between two objects in an isolated system, the total momentum of the two objects before the collision.

Chapter 6 Momentum and Collisions 6-1 Momentum and Impulse Momentum(p) describes the tendency of an object to continue moving (or not moving) at a constant.

MOMENTUM. What is Momentum? Momentum is a vector quantity that any moving object with a mass has Momentum has a direct relationship with mass and velocity.

Momentum and Impulse Momentum Momentum can be defined as "mass in motion." All objects have mass; so if an object is moving, then it has momentum Momentum.

Chapter 6 and 7. momentum = mass x velocity p = mv units: kgm/s or Ns.

Equations: Conservation of Momentum: Vocabulary:. Law of conservation of momentum. Elastic collision. Inelastic collision. Perfectly inelastic collision.

Chapter 9 Momentum Is equal to the mass of an object times the velocity of an object Has the symbol “p” so p= m v - measured in kgm/s - It is a vector.

Warm up A 3.00 kg crate slides down a 7 m ramp. The height of the ramp is 5 m off the ground. The velocity of the crate at the bottom of the ramp is 5.

1 Do Now: What makes the shuttle go UP? Objectives: Utilize IMPULSE to calculate: Force – time – change in velocity Home work: Page 233: #’s 1 – 5 all.

Conservation of Momentum GOALS: Define MOMENTUM Understand how MOMENTUM is conserved in a collision or explosion. Use the principle of Conservation of.

1 Honors Physics Chapter 9 Momentum and Its Conservation.

“The quality of Motion”. Momentum A vector quantity defined as the product of an objects mass and velocity.

Momentum Chapter 2 Section 3 Notes. Imagine This…  Imagine a smart car and a dump truck traveling with the same velocity. If both drivers applied the.

Physics Chapter 6: Momentum and Collisions.  Force is Not Always Constant  Application of Force May Vary with Time.

PHY 101: Lecture The Impulse-Momentum Theorem 7.2 The Principle of Conservation of Linear Momentum 7.3 Collision in One Dimension 7.4 Collisions.

12.1 Momentum. Chapter 12 Objectives  Calculate the linear momentum of a moving object given the mass and velocity.  Describe the relationship between.

Physics R/S Chapter 6: Momentum. Please select a Team 1. Team 1 2. Team 2 3. Team 3 4. Team 4 5. Team 5.

Impulse and Momentum Review … This is what’s on the test.

Momentum, Impulses, and Collisions. A. Background Information 1.Momentum of an object is anything that has inertia and is moving a. It is based on an.

Momentum The property of moving object has that makes it difficult to stop. (technically, product of mass and velocity) Formula: p = mv.

3.1.2 Conservation of Momentum

Momentum and Impulse.

Momentum and Impulse.

Chapter 6 Section 3 Inertia & Momentum

2.3 Momentum Momentum:

Chapter 7 Impulse and Momentum.

Presentation transcript:

Impulse and Momentum Collisions and conservation of momentum Chapter 9 Pages 229-255 I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.

9.1 Impulse and Momentum Scan page 230 Write down the following information: Define Impulse, Momentum, and Impulse-Momentum theorem Write out the formulas for momentum and the impulse-momentum theorem What are the units for momentum? Impulse? I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.

Impulse and Momentum in a crash Read the last 2 paragraphs on page 231. What can result in a large impulse? What happens to the driver when a crash suddenly stops a car? How does an airbag reduce the likelihood of injuries? I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.

p.233 Practice problems m = 725 kg, v = 115 km/h (change to m/s) 23200 kgm/s eastward Use the above momentum to find v when m = 2175 kg t = 2.0 s, F = 5000 N 10000 Ns westward pf = 13200 kgm/s east, v = ? Skip m = ____ kg, vi = ___ m/s, vf = ____ m/s, t = ____ s ∆p = 5280 kgm/s (also equal to change in impulse) F = 88.0 N On your own I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.

Angular Momentum Write the formulas on p.233 and 234 Read 234-235 about the forces acting, planets orbiting the Sun, divers off a diving board, and ice-skaters. Be prepared for either a short-answer or essay question on your next test. I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.

Individual assignment 9.1 section review P.235 (#6-12) Due by the end of class today I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.

Bellringer Which has greater momentum, a 2.0kg hockey puck moving east at 2.5m/s or a 1.3kg hockey puck moving south at 3.0m/s? A 147.25 kilogram motorcycle is moving at a speed of 69.75 m/s. What is the momentum of the cycle? If the motorcycle above crashes into a wall and stops in a time of 0.05 seconds, how much force acted on the cycle to bring it to a stop? I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.

9.2 Conservation of momentum Read on p.236 about Momentum in a Closed, Isolated System. Define all bold terms. Why does it matter if the system is closed and isolated? I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.

Collisions When objects collide in a closed, isolated system, momentum is conserved. Equation: pCi + pDi = pCf + pDf Example Problem 2 on p.237 together Sketch the situation for all problems and label all variables (different m and v) Pay attention to whether objects stick together or not – this will change the equation slightly. I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.

Practice problems P.238 (#13-18) 13. 1.1 m/s 14. 0.034 m/s 18. 2.0 m/s in the opposite direction I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.

Recoil Read on p.239 about propulsion in space. Go over Example Problem 3 together (p.240) What is the equation for a recoil problem? Practice problems on p.240 19. 7.91 m/s 20. 9.0 cm/s to the right 21. 2.8 m/s in the opposite direction I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.

Two-dimensional collisions Time to add vectors and angles! Split all problems into the x and y directions Right triangles!! Go over Example Problem 4 together (p.242) Practice p.243 (#22-25) 22. 11.2 m/s, 36.6o north of west 23. 18.1 m/s, 15.9o south of east 24. 3.5 m/s, 30.0o to the right 2.0 m/s, 60.0o to the left 25. 22.1 m/s, yes I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.

Conservation of angular momentum Read p.243-245 about conservation of angular momentum. Pay special attention to explanation of Earth’s rotation, an ice-skater’s rotation, tops, and gyroscopes. I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.

9.2 section review P.245 (#28-31) – due today Chapter 9 review p.250-253 (#32-42, 48-64even, 73-82) I Can: Given the mass, velocity and time it takes to stop an object in an inelastic collision, determine the momentum and impulse of the collision.