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Chapter 2: Force
by emily rossini
# Chapter 2: Force

## Newton's Laws

### 1st Law

### 2nd Law

### 3rd Law

### 4th Law

## Vectors

### Magnitude

### Direction

## F = ma

## a push or pull

## Types of Forces

### Contact Force

### Long-Range Force

### Electromagnetic Force

## Net Force

### the vector sum of all forces acting on an object

## Free-Body Diagrams

## Equilibrium

### Translational Equilibrium

### balance of forces

## Internal Force

## External Force

## Pulleys

### Tension

## Diagrams

### Step

### Polar

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Law of Inertia

Force vector = mass scalar x acceleration vector

Interaction Pairs, Equal and Opposite Reactions, same magnitude, in different directions

Law of Universal Gravitation

exist only when two objects are touching

Normal Force, perpendicular to contact surfaces

Friction, parallel to contact surfaces

does not require touching

Gravitational Force, weak fundamental force

net force on an object is zero