Collisions.

Slides:

Advertisements

Similar presentations

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.

Advertisements

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 impact?

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

Honors Physics. Who can tip over the water jars of the heavens when the dust becomes hard and the clods of earth stick together.? Job 38:38.

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 Conservations Notes

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.

Principles of Physics. - property of an object related to its mass and velocity. - “mass in motion” or “inertia in motion” p = momentum (vector) p = mvm.

Conservation of Momentum Physics 11. Quick Questions to Discuss with neighbour  If you throw a ball against a wall, which of the three impulses is the.

Science Starter A 2 kg object moving east at 12 m/s collides with a stationary 6 kg object. After the collision, the 2 kg object bounces west at 6 m/s.

When objects collide without being permanently deformed and without generating heat, it is an elastic collision.

Momentum and Its Conservation LEQ: What is Momentum?

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.

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.

Chapter 9 - Collisions Momentum and force Conservation of momentum

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)

Momentum. What is Momentum? Momentum – tendency of objects to keep going in the same direction with the same speed –Depends on mass and velocity –Has.

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.

Elastic and Inelastic Collisions. Elastic Collision If 2 colliding objects are very hard and no heat is produced in the collision, KE is conserved as.

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.

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.

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 Conservations Notes

Momentum Notes. Momentum Momentum ( ρ)= Mass x Velocity ρ = mv ρ = momentum (kg·m/s) m= mass (kg) v= velocity (m/s)

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.

Momentum Anything which is moving has MOMENTUM. The amount of momentum it has depends on:- 1. MASS (kg) 2. VELOCITY (m/s)

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.

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.

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

» Discuss with a partner: What does it mean to conserve something? ˃To save ˃To only use a portion of ˃To make it last ˃To store » Discuss with a partner:

Momentum Notes. Momentum Momentum ( ρ) – inertia in motion Mass x Velocity ρ = mv measured in kg·m/s.

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.

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 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.

Momentum “Why can you stop a baseball traveling at 40 meters per second but not a car traveling at 1 meter per second?”

» Discuss with a partner: What does it mean to conserve something? ˃To save ˃To only use a portion of ˃To make it last ˃To store » Discuss with a partner:

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

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

Momentum and Collisions

3.1.2 Conservation of Momentum

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

CONSERVATION OF LINEAR MOMENTUM

Welcome Physics Pick up the two handouts at the front

Conservation of Momentum

Momentum and Impulse.

Momentum and Impulse.

Conservation of Momentum

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

Conservation of Momentum and collisions

Momentum Conservation of Momentum

2.3 Momentum Momentum:

Momentum Objectives (Mom. and Energy Unit)

Conservation of Momentum

Conservation of Momentum

Collisions Momentum is always conserved in collisions

Momentum Mass X Velocity.

Ch. 6 Momentum and Impulse

Collisions Chapter 7.5.

Collisions Ms. Jeffrey- Physics.

Presentation transcript:

Collisions

There are two types of collisions… 1. Elastic (a collision in which there is no heat or permanent deformation) 2. Inelastic (a collision where two or more objects become tangled or coupled together)

Possible formulas for collision… m1v1 + m2v2 = mfvf mivi = m1v1 + m2v2 m1v1 + m2v2 = m1av1a + m2av2a

Example 1: Train car A with a mass of 5500kg traveling at 4m/s collides with and couples train car B which is at rest. Assuming car B is of equal mass, what is the final velocity of the joined cars?

Example 2: A whale with a mass of 200kg moving at 0.5m/s North eats a blind tuna with a mass of 50kg that is swimming South at 10m/s . What is the momentum of the system after lunch? What is the whales new apparent velocity?

Example 3: If a 2000kg car traveling east at 20m/s collides with another car (2000kg) traveling north at 30m/s, what is the resulting momentum of the collision?