Summarize what you did in Tuesday’s collision activity.

Slides:

Advertisements

Similar presentations

Chapter 7 Collisions. If the sum of the external forces is zero, then PRINCIPLE OF CONSERVATION OF LINEAR MOMENTUM The total linear momentum of an isolated.

Advertisements

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.

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.

Momentum Impulse, Linear Momentum, Collisions Linear Momentum Product of mass and linear velocity Symbol is p; units are kgm/s p = mv Vector whose direction.

Momentum Conservation

Momentum is Conserved in an isolated system.

Momentum and Impulse.

Momentum is conserved for all collisions as long as external forces don’t interfere.

Collisions and Momentum 3.1 pp Mr. Richter.

Chapter 18 Section 3 Collisions. Mass Mass is the amount of matter in an object The mass of an object affects how easy it is to changes its motion.

Chapter 7 Linear Momentum. Chapter Momentum Linear Momentum- product of mass times velocity p=mvp=momentum units=kg.m/sec Restate Newton’s second.

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.

Elastic Collisions Inelastic Collisions

Conservation of Momentum. Newton’s Third Law For every action, there is an equal and opposite reaction.

Momentum and Its Conservation

Chapter 6 Momentum and Impulse

Momentum and Its Conservation LEQ: What is Momentum?

Chapter 7 Impulse and Momentum. There are many situations when the force on an object is not constant.

Linear Momentum. 5-1 Linear Momentum Linear Momentum, p – defined as mass x velocity The unit is kg·m/s A quantity used in collisions So a small object.

Chapter 9 - Collisions Momentum and force Conservation of momentum

Chapter 7 Impulse and Momentum.

Chapter 5: Momentum Momentum: a measure of motion

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.

Ch 7. Impulse and Momentum

Elastic Collisions Inelastic Collisions.  In a closed system, the total momentum of all objects in the system will remain constant  In other words…the.

P before =p after.  Within a closed system (a system that does not exchange energy with the outside environment) momentum is always conserved.  Momentum.

Momentum. Collisions Perfectly inelastic collisions –When two objects stick together and move as one mass Elastic collisions –When two objects return.

The force on an object may not be constant, but may vary over time. The force can be averaged over the time of application to find the impulse.

Linear Momentum. 5-1 Linear Momentum Linear Momentum, p – defined as mass x velocity The unit is kgm/s A quantity used in collisions So a small object.

Inelastic Collision An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies after the encounter is.

Chapter 7 Linear Momentum. Objectives: Students will be able to: Explain that a conserved quantity is a quantity that remains numerically constant. Define.

2D Collisions Physics 12 Adv.

Lecture 14: Collisions & Momentum. Questions of Yesterday A 50-kg object is traveling with a speed of 100 m/s and a 100-kg object is traveling at a speed.

Chapter 7 Impulse and Momentum. 7.1 The Impulse-Momentum Theorem There are many situations when the force on an object is not constant.

Phys211C8 p1 Momentum everyday connotations? physical meaning the “true” measure of motion (what changes in response to applied forces) Momentum (specifically.

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

Momentum and Collisions. Conservation of Momentum.

Unit 5: Elastic Collisions In elastic collisions, two objects collide and return to their original shapes with no loss of total kinetic energy. ◦ After.

Collisions and Explosions Momentum and Energy. Let’s think about collisions:  How can 2 objects collide, and what can happen when they do?  Head-on,

 car crashes car crashes 

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

6-3: Elastic and Inelastic Collisions Objectives: Identify different types of collisions Determine the decrease in kinetic energy during perfectly inelastic.

Chapter 7 Impulse and Momentum

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.

Momentum Practice Problems Physics. Problem #1 A 1500 kg car traveling +6 m/s collides with a 2000 kg truck at rest. The vehicles collide, but do not.

Friday phys 1-25 Momentum Collisions Energy. The Correct answer to #79 I was wrong! 2.8 m/s [SW] and 2.8 m/s [NE] Before =.64 kg m/s [e] After = HORIZONTAL.

Ch 6 Momentum and Collisions. Lab Day Objective In this chapter we will learn: – How to calculate momentum and impulse – Conservation of Momentum – Collisions.

Chapter 7 Impulse and Momentum. 7.1 The Impulse-Momentum Theorem There are many situations when the force on an object is not constant.

Elastic and Inelastic Collisions

Chapter 6. When objects collide their motion changes and this is the result of a concept called momentum. Momentum = mass x velocity p = mv kgm/s or Ns.

Defining Systems : Has 2 interacting objects, defined for a problem, and is closed and isolated Closed: mass is constant Isolated: no external force.

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

Guidelines for Solving Conservation of Momentum Problems

Chapter 7 Impulse and Momentum.

The value of the momentum of a system is the same at a later time as at an earlier time if there are no _____ . Select the correct answer. collisions.

A 61 kg lumberjack stands on a 320 kg log that floats on a pond

7. Momentum and impulse Momentum:

9.8 Momentum and Kinetic Energy in Collisions

Bell Ringer: Define Kinetic Energy, Potential Energy, and Work.

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

The Law of Conservation of Momentum

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.

Collisions Momentum is always conserved in collisions

Ch. 6 Momentum and Impulse

Physics 2 – Jan 5, 2018 Today’s Objective: Collisions Assignment:

Physics 2 – Jan 24, 2017 P3 Challenge– Today’s Objective: Collisions

Presentation transcript:

Summarize what you did in Tuesday’s collision activity. BELL RINGER 12/8: Summarize what you did in Tuesday’s collision activity. OBJECTIVE: SWBAT define conservation of momentum; SWBAT define and calculate for inelastic collisions AGENDA: Notes Group Practice Exit Ticket HOMEWORK: 1-5, 7-8a on Worksheet

Conservation of Momentum Momentum in a system is conserved Pfinal=Pinitial In general, for two objects that are colliding, the equation looks like: m1v1 + m2v2 = m1v1 + m2v2 But, the equation is rearranged or changes slightly depending on the type of collision! initial final

Applying conservation of momentum EX: Two ice skaters meet in the center of the rink and come to rest. They now push off against one another. One skater, with a mass of 54-kg, acquires a speed of 0.95 m/s. What is the speed of the other skater, whose mass is 61-kg?

Conservation of Momentum + Collisions Momentum in the system (objects colliding) is conserved as long as there are no external forces acting on the system That doesn’t mean momentums within the system don’t change; the sum remains the same, but momentum will transfer b/w objects

COLLISIONS There are two types of collisions: Inelastic: momentum is conserved, but kinetic energy is not; objects stick together upon collision. When the maximum amount of KE is lost to other forms of energy, it is called a completely inelastic collision. 2. Elastic: momentum and kinetic energy are conserved

INELASTIC COLLISIONS Note: one object won’t always start at rest, so the m2v2 term can come back! When one object starts at rest and the objects stick together after the collision and have the same final velocity, the equation is rearranged to: m1v1 + m2v2 = m1v1 + m2v2 m1v1 = (m1 + m2) v

INELASTIC COLLISIONS EX: On a touchdown attempt, a 95.0-kg running back runs to the right towards the end zone at 3.75 m/s. An 111-kg linebacker moving to the left at 4.10 m/s meets the runner in a head-on collision. If the two players stick together, what is their velocity immediately after the collision?

Answer Choices for Question 4: BELL RINGER 12/5: STANDARD: EMI 601 Answer Choices for Question 4: OBJECTIVE: SWBAT solve collision problems using the conservation of energy equations AGENDA: Group Practice Start Problem Set HOMEWORK: Problem Set due Monday (check your email); QUIZ MONDAY!

What is the general equation for conservation of momentum? BELL RINGER 12/5: What is the general equation for conservation of momentum? OBJECTIVE: SWBAT solve collision problems using the conservation of energy equations AGENDA: Group Practice Start Problem Set HOMEWORK: Problem Set due Monday (check your email); QUIZ MONDAY!

REVIEW A train with a mass of 3500-kg is traveling at 20 m/s when it collides with another train that has a mass of 2700-kg and is traveling 15 m/s. If the objects stick together upon collision, what will be the trains’ velocity right after colliding?

GROUP PRACTICE