# physics semester exam

## 40 terms · vocab words/newtons laws/ types of forces

### physics

study of motion and forces

### meter

metric unit of distance

only magnitude

### distance

how far you have traveled

part of motion

### uniform motion

straight line no curves

### instantaneous acceleration

speed and direction at any distance

any push or pull

due to touching

### agent

cause of friction

### net force

all forces of an object

### equilibrium

net forces equal zero

### kinetic friction

friction of motion

### period

the time needed to repeat

### interaction pair

equal and opposite forces

### SI

standard unit of measurement

### inverse relationship

when one goes up the other comes down

### vector quantity

magnitude and direction

### displacement

how far from where you started

### free fall

only force acting on is gravity

### constant acceleration

speeds up or slows down at the same rate

### system

collection of objects

9.8 m/s2

not touching

### inertia

an objects ability to resist change

### static friction

friction that keeps something stationary

### terminal velocity

fastest an object will get due to gravity

height of a wave

### equilibrant

force that balances everything out

### newtons first law

objects in motion will stay in motion until an outside object disturbs it

f=ma

### newtons third law

for every action there is an equal and opposite reaction

friction

normal

spring

tension

thrust

weight

### 4 fundamental forces

gravity, strong nuclear, weak nuclear, electro magnetic

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