Momentum Objectives: Momentum and Newton’s Second Law

Slides:

Advertisements

Similar presentations

Conservation of Momentum and Collision

Advertisements

Linear Momentum Vectors again.

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.

Conservation of Momentum

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

Momentum and Energy in Collisions. A 2kg car moving at 10m/s strikes a 2kg car at rest. They stick together and move to the right at ___________m/s.

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 Impulse Chapter 7.

Impulse and Momentum Questions

Momentum The secret of collisions and explosions.

Chapter 6 Momentum and Impulse

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

Chapter 6 Momentum and Impulse. Momentum The product of an object’s mass and velocity: p = mv Momentum, p, and velocity, v, are vector quantities, meaning.

AP Physics C I.D Systems of Particles and Linear Momentum.

Linear Momentum Impulse & Collisions. What is momentum?  Momentum is a measure of how hard it is to stop or turn a moving object.  What characteristics.

Momentum. What is momentum? Momentum is the quantity of motion. If an object is in motion, it has momentum Mass in motion Momentum is dependent on 2 things:

CONSERVATION OF MOMENTUM. When two particles collide they exert equal and opposite impulses on each other. It follows that for the two particles, the.

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

The Law of Conservation of Momentum

Collisions. Review Momentum is a quantity of motion. p = mv A change in momentum is called impulse. Impulse =  p = m  v Impulses are caused by forces.

ISNS Phenomena of Nature A Rifle and a Bullet When a bullet is fired from a rifle, the rifle recoils due to the interaction between the bullet and.

Lecture 13: Momentum. Questions of Yesterday 1) A mass with speed v hits a horizontal spring and compresses it a distance d. If the the speed of the mass.

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

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

Collisions Inelastic vs. Elastic Pg. 233 – 239 Pg

If you apply a force to an object, the effect it has depends on the mass of the object and for how long you exert the force. You apply a constant force,

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.

Science Starter! A hockey puck has a mass of kg and strikes the pole of the net at 25 m/s. It bounces off with the same speed but in the opposite.

1 Honors Physics Chapter 9 Momentum and Its Conservation.

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.

1 pt Definitions Impulse P problems P conservation Misc.

Momentum-Impulse Physics 513. Multi-Dimensional Impulse A soccer ball has a mass of 0.40 kg. Initially it is moving to the left at 20 m/s, but then it.

1. What is the difference in elastic and inelastic collisions?

Formula Momentum (p) = Mass x velocity Unit is kgm/s.

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.

Lec 05: Newton’s Third Law

Momentum and Impulse Conservation of Momentum Collisions

Momentum & Impulse For clickers.

HONORS PHYSICS DAY 28 Here we go! Today: HW Quiz on the last HW’s

GCSE PHYSICS: MOMENTUM

Collisions in 1D Lesson 3.

Motion & Forces Lesson 3 Action and Reaction Newton’s Third Law

Do Now: First, we recognize that we begin with a momentum of zero!

Momentum and Collisions

CONSERVATION OF LINEAR MOMENTUM

Linear Momentum Impulse & Collisions.

Conservation of Momentum

p = mv v p m B. Momentum Momentum quantity of motion

Momentum Objectives : To know the properties of momentum.

Before Class Begins Turn in homework (pgs 201 & 204) Get:

Momentum 27/11/2018 Any object that has both mass and velocity has MOMENTUM. Momentum (symbol “p”) is simply given by the formula: P V M Momentum = Mass.

I. Momentum Product of an objects mass and velocity. ρ = mv

Motion & Forces Lesson 3 Action and Reaction Newton’s Third Law

Bellringer 9/30 A skier leaves the horizontal end of a ramp with a velocity of 25.0m/s East and lands 70.0 m from the base of the ramp. How high is the.

I. Newton’s 3rd Law For every ACTION force there is an equal an opposite REACTION force. Ex: Hammer hits a nail Action: Hammer hitting nail Reaction: Nail.

Center of Mass & Linear Momentum

Momentum 28/12/2018 Any object that has both mass and velocity has MOMENTUM. Momentum (symbol “p”) is simply given by the formula: P V M Momentum = Mass.

Momentum “Keep Goingness” of an object. p = mv where p = momentum

The Law of Conservation of Momentum

Chapter 7 Impulse and Momentum.

Momentum Mass X Velocity.

Conservation of Momentum - Definition

p = mv v p m B. Momentum Momentum quantity of motion

Lesson 10: Conservation of Momentum

Newton's Third Law of Motion

Momentum, Force and Impulse

Presentation transcript:

Momentum Objectives: Momentum and Newton’s Second Law Impulse of a Force Collisions

Momentum Momentum = (Mass ) x (Velocity) Magnitude Direction Newton’s Second Law Revisited: Net Force = (Time) (Change in Momentum) No Net Force Net Force Momentum changes due to the Force Momentum Before = Momentum After

Conservation of Momentum Q1. You fall into a deep pool and begin sinking. Can you grab yourself by the hair and pull yourself upward? (a) Yes (b) No (c) I don’t know Q2. You are performing an extravehicular activity (EVA) just outside the International Space Station (ISS) . You have some instruments in your pocket, but your safety rope has just broken. What can you do to begin moving toward the ISS?

Conservation of Momentum Q3. A bullet with a mass 60.0 g is fired with an initial velocity of 575 m/s from a gun with a mass 4.50 kg. What is the speed of the recoil of the gun?

Conservation of Momentum Q3. A bullet with a mass 60.0 g is fired with an initial velocity of 575 m/s from a gun with a mass 4.50 kg. What is the speed of the recoil of the gun? Before collision: (0.060 kg)(0 m/s) + (4.50 kg)(0 m/s) = 0 kg.m/s

Conservation of Momentum Q3. A bullet with a mass 60.0 g is fired with an initial velocity of 575 m/s from a gun with a mass 4.50 kg. What is the speed of the recoil of the gun? Before collision: (0.060 kg)(0 m/s) + (4.50 kg)(0 m/s) = 0 kg.m/s After collision: 575 m/s ???

Conservation of Momentum Q3. A bullet with a mass 60.0 g is fired with an initial velocity of 575 m/s from a gun with a mass 4.50 kg. What is the speed of the recoil of the gun? Before collision: (0.060 kg)(0 m/s) + (4.50 kg)(0 m/s) = 0 kg.m/s After collision: 575 m/s ??? (0.060)(575 m/s) + (4.50 kg) (velocity) = = (34.5 kg.m/s) + (4.50 kg) (velocity)

Conservation of Momentum Q3. A bullet with a mass 60.0 g is fired with an initial velocity of 575 m/s from a gun with a mass 4.50 kg. What is the speed of the recoil of the gun? Before collision: (0.060 kg)(0 m/s) + (4.50 kg)(0 m/s) = 0 kg.m/s After collision: 575 m/s ??? (0.060)(575 m/s) + (4.50 kg) (velocity) = = (34.5 kg.m/s) + (4.50 kg) (velocity) 0 = 34.5 + (4.50 kg) (velocity) -34.5 = 4.50 (velocity) v = 7.67 m/s

Impulse The force acting during a certain interval of time Impulse (change in momentum) = (Force) x (Time Interval) Q4. Which way hurts less? Jumping from a tree with your knees stiff or bent? (a) stiff (b) bent (c) It doesn’t matter

Impulse The force acting during a certain interval of time Impulse (change in momentum) = (Force) x (Time Interval) Q5. Which way hurts less? Jumping from a tree with your knees stiff or bent? (a) stiff (b) bent (c) It doesn’t matter Q6. Can Superman really save Lois Lane by catching her just before she hits the ground? (a) Yes (b) No (c) I do not know http://www.youtube.com/watch?v=DlB1PcgkYLU

Momentum and Impulse 20 P1. Find the momentum of a bullet of 20.0 g traveling at velocity of 185 m/s. Ans. P2. What force is required to stop a 1,250-kg car traveling at 95.0 km/h within 4.00 s? Ans. P3. A 125-g glider traveling to the right at 2.5 m/s collides head-on with a 220-g glider traveling to the left at 3.1 m/s. What is the total momentum of the system? Ans. P4. While standing on ice, you take your 0.450-kg hat and throw it horizontally at 0.5 m/s. If your mass is 70 kg, what is your recoil velocity? Ans.

Example: Collisions Momentum Before = Momentum After Q7. A 200-g glider moves at 1.2 m/s to the right and collides with a 100-g stationary glider. In which direction will the 200-g glider go after the collisions? (a) right (b) left (c) It stops

Example: Collisions Momentum Before = Momentum After Q8. A 200-g glider moves at 1.2 m/s to the right and collides with a 100-g that is moving to the left at 0.8 m/s. After the collisions, the two gliders stick together. With what velocity are they moving?

Example: Collisions Momentum Before = Momentum After Q8. A 200-g glider moves at 1.2 m/s to the right and collides with a 100-g that is moving to the left at 0.8 m/s. After the collisions, the two gliders stick together. With what velocity are they moving? Before collision: (0.200 kg)(1.2 m/s) + (0.100 kg)(-0.8) = 0.16 kg.m/s After collision: (0.200 kg + 0.100 kg)(velocity) = (0.3 kg) (velocity) 0.16 = 0.3 v v = 0.53 m/s

Collisions 20 P1. A 125-g glider moves east at 1.2 m/s and collides with a 90-g stationary glider. After the collision, the 125-g glider continues to move east at 0.7 m/s. What is the velocity of the 90-g glider? Ans. P2. A 75-g glider moves east at 1.2 m/s and collides head-on with a 45-g glider moving west at 0.8 m/s. If both collide and stick together, what is their velocity after the collision? Ans.