Momentum An objects momentum is its mass multiplied by its velocity Momentum = mass * velocity Kg m /s kg m/s Mass = 1000 kg V = 6 m / s Momentum = 1000.

Slides:

Advertisements

Similar presentations

Conservation of Momentum and Collision

Advertisements

Forces come in pairs When an object collides with another object, the two objects exert an equal and opposite force on each other for the same length.

Chapter 5 Momentum Ewen et al. 2005) Objective: Apply the law of conservation of momentum to both elastic and inelastic collisions of two objects. Apply.

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

Collisions (L8) collisions can be very complicated two objects bang into each other and exert strong forces over short time intervals fortunately, even.

Journal 1/27/15 Momentum is the basic idea behind weapons like guns. What kind of defensive thing might we create using momentum or collisions? Objective.

Conservation of Momentum

L-8 (I) Physics of Collisions (II) Work and Energy I. Collisions can be very complicated –two objects bang into each other and exert strong forces over.

 Momentum Noadswood Science, Momentum  To understand momentum Wednesday, May 20, 2015.

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

© Shannon W. Helzer. All Rights Reserved. Conservation of Momentum  Momentum must be conserved.  This fact means that the momentum in a specific.

Higher Physics – Unit – Momentum and Impulse.

10 A small beanbag and a bouncy rubber ball are dropped from the same height above the floor. They both have the same mass. Which one will impart the.

Physics Chapter 6 Impulse and Momentum.

Linear Momentum why is more force needed to stop a train than a car if both travel at the same speed? why does a little tiny bullet have so much force.

1 1) speeds up 2) maintains constant speed 3) slows down 4) stops immediately An open cart rolls along a frictionless track while it is raining. As it.

Momentum and Its Conservation LEQ: What is Momentum?

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

Chapter 2, Section 3 Momentum Notes. Momentum, Mass and Velocity.

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

MOMENTUM the product of mass and velocity Units are kgm/s, or any mass velocity combo Example: Which has more momentum, a 8000-kg hippo trotting at 1.5.

Some ice falls off the top of a moving truck and hits the windshield of a car. The effect is potentially more serious if (a) the truck is moving in the.

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)

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

Impulse and Momentum Dr P Ramalingam October 13, 2007.

Conservation of Momentum In the absence of an outside force, the momentum of a system will remain unchanged. Momentum before = Momentum after p i = p f.

Collisions (L8) collisions can be very complicated two objects bang into each other and exert strong forces over short time intervals fortunately, even.

The Law of Conservation of Momentum

 Find the momentum of a 150 kg object moving to the north at 16.0 m/s.

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.

Conservation of Momentum. Momentum  The velocity and mass of an object give it momentum.  The larger the velocity and mass, the larger the momentum.

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.

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

How do air bags protect you? They protect you by allowing you to come to rest more slowly, then if you hit the steering wheel or the dash board. Since.

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.

 An object at rest remains at rest, and an object in motion remains in motion, unless acted on by an unbalanced force  also called the “Law of Inertia”

Ch. 9 Impulse and Momentum. Impulse (I) force X change in time I=FΔt.

Momentum & Impulse. What does it mean to say “roll with the punches?” Why is it important to wear a helmet? Is it a good thing that cars basically crumble.

L-8 Physics of Collisions Work and Energy Collisions can be very complicated –two objects crash into each other and exert strong forces over short time.

Momentum Imagine a cannon: When the cannon fires it applies a force to the cannon ball of mass m B given by the equation: F = m B A Boom But we have another.

Lesson 3: Wave Interactions. Interaction of Waves with Matter Absorption: is the transfer of energy by a wave to the medium through which it travels Transmission:

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 & Impulse For clickers.

GCSE PHYSICS: MOMENTUM

3.1.2 Conservation of Momentum

Momentum Objectives: Momentum and Newton’s Second Law

Newton’s 3rd Law and Momentum

CONSERVATION OF LINEAR MOMENTUM

Physics Section 6.2 Calculate the momentum of collisions

Chapter 5 Momentum.

9.8 Momentum and Kinetic Energy in Collisions

Purpose: Definition of oblique collison.

AP Physics Chapter 6 Momentum and Collisions

PHYSICS 103: Lecture 13 Review of HW Momentum Agenda for Today:

Collisions and Work (L8)

The Law of Conservation of Momentum

AP Physics Chapter 6 Momentum and Collisions

L-8 (I) Physics of Collisions (II) Work and Energy

Conservation of Momentum

Momentum Mass X Velocity.

Physical Science Chapter 12 Section 3

L-8 Physics of Collisions Work and Energy

Momentum, Mass, and Velocity

Newton's Third Law of Motion

Exam correction deadline is today by 4:45.

Presentation transcript:

Momentum An objects momentum is its mass multiplied by its velocity Momentum = mass * velocity Kg m /s kg m/s Mass = 1000 kg V = 6 m / s Momentum = 1000 *6 = 6000 kg m / s

Momentum & collisions When two objects collide they exert an equal & opposite force on each other The force (they apply) = change on momentum time

Reducing the force in accidents You can explain air bags, seat belts etc using momentum Ie the longer the time an accident takes means momentum is changed over a longer time reducing the force Mass = 1000 kg Initial velocity 5 m/ s If it stops in 2 seconds Force = 1000 * 5 2 = 2500 N Force = 1000 * 5 5 = 1000 N If it stops in 5 seconds

Momentum can explain…… Rockets Momentum of gas this way = Momentum of rocket this way Recoil of a gun Mass * velocity of cannon = Mass * velocity of cannon ball The momentum is conserved, so the momentum to the left must equal momentum to the right

Momentum & collisions Carriage A is rolling towards carriage B which is stationary. They stick together after the crash. What is the new velocity? A Mass kg. Velocity 5 m/s B Mass kg. Velocity 0 m/s A + B Momentum before the crash = momentum after the crash m * v + m * v = m * v * * 0 = * V = * V = V = 2.5 m/s 20000

Polarization of light (Sunglasses)

Light normally travels in random planes Filters can “polarize” light, only light in a certain plane can get through Polarized sunglasses block out horizontal light (for example light that reflects off light surfaces such as the sea. Only light in the “Y plane” gets through. Reducing the strain on your eyes.

Adding waves If they are in phase (crests line up) = Constructive interference If they are out of phase (crests and troughs line up) = Destructive interference

Two slit experiment Laser light source