## Kinematics

Kinematics is all about motion. Motion is a change in position relative to a frame of reference

### Vocabulary

scalar vs vector distance vs displacement speed vs velocity frame of reference acceleration

### Vectors

Vectors can be manipulated in two ways, by trigonometry or on a Cartesian coordinate system

### The four kinemetic equations

$$d = v_it + \frac{1}{2}at^2$$ $$v_f^2 = v_i^2 + 2ad$$ $$v_f = v_i + at$$ $$d = \frac{v_i + v_f}{2}t$$

## Forces

### The four fundamental forces

Gravity, electromagnetic, strong nuclear, weak nuclear

### Newtons Laws

1. A body in motion stays in motion and a body at rest stays at rest, unless acted on by an outside force
2. $\overrightarrow{F}=m\overrightarrow{a}$
3. For every action, there is an equal and opposite reaction. Or to be more precise, when one body exerts a force of $\overrightarrow{F}$ on a second body, the second body exerts a force of $-\overrightarrow{F}$ on the first body. - Newtons laws, friction, gravitation

## Energy

- work, force, conservation of energy - heat

## Resources

The Physics Classroom - basically covers everything Kinematics Fundamentals - this too

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