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Chapter 7 and 8
by Dustin Brown
# Chapter 7 and 8

## Words of the Day

### Applicability

### Trust

## Momentum

### Definition of Linear Momentum

### Collisions between and amongst objects

### Conservation of Momentum

## Three types of Collisions

### Completely Inelastic

### Inelastic

### Elastic

### One-Dimensional collisions are the most common and
easiest to analyze

## System of Particles

### Center of Mass

### Motion of the Center of Mass

## Angular Energy

### Rotational Kinetic Energy

### Moment of inertia

## Rotational Dynamics

### Torque

### Equilibrium of Forces and Torques

### Newton’s 2nd Law for Rotations

### Rolling Bodies

### Refer to page 258, Table 8.1

## Clockwise rotation

### negative

## Counter clockwise rotation

### positive

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able to apply, what areas does energy apply

use for, non constant acceleration, final velocity, changes in position/direction

firm reliance on the integrity, ability, or character of a person or thing

p = mv

p = 0

If no external force acts on system, the initial momentum of the system is equal to the final momentum of the system.

Perfect Sticking

Conservation of only momentum

m1v1i +m2v2i = (m1 +m2 )vf

“Sticky” but the bodies do not stick together

Conservation of momentum only

Perfect bouncing

Conservation of kinetic energy and momentum

m1v1i +m2v2i = m1v1f +m2v2f

Average location of the mass in a system of particles

3D in general

Definition of Momentum

Newton’s 2nd Law for Systems

k= 1/2*l*w^2

Depends on mass and shape

Angular Force

Vector Quantity, T

Magnitude, T= -/+ F*D, T= F r sin X

F=0, Linear

T=0, Angular

Add translational and rotational kinetic energies

shapes

axis of rotation

rotational inertia