Physics Final 1 Vocab

Scaler

Magnitude

Vector

Magnitude + Direction

Speed

Scaler

Velocity

Vector

Acceleration

Gets faster/slower

Distance

Length of Path Taken

Displacement

Distance from one place to another

Elastic Collision

When two things collide and they bounce off eachother

Inelastic Collision

When two things collide and they stick together

Newtons 1st Law

When an object is at rest it will stay at rest unless an unbalanced fore acts upon it, same with motion

Intertia

Matter that stays in rest or in unchanging motion unless acted upon by an external force

Equilibrium

The state in which all forces are exactly in balance so there is no movement

Friction

The force felt between to surfaces when one attempts to slide against the other

Force

The push or pull on an object with mass causes it to change its velocity

Contact force

A force that is applied by objects in contact with eachother

Action at a distance

A force that is applied without physical contact

Newtons 2nd Law

Force=mass x acceleration (F=ma)

Gravity

-9.31 m/s²

Newtons 3rd law

Every action has an equal opposite reaction

Momentum

Mass x Velocity

Impulse

Force x Time

Impulse-momentum Theorem

The impulse applied to an object will be equal to the change in its momentum

Giga

G, 10^9

Mega

M, 10^6

Kilo

k, 10^3

Deka

da, 10^1

Deci

d, 10^-1

Centi

c, 10^-2

Milli

m, 10^-3

Micro

Greek Letter mu, 10^-6

Nano

n, 10^-9

1-9 Sigfig Rule

All non zero numbers are significant

Sandwich Sigfig Rule

Zeros between two non zero digits are significant

Trailing Sigfig Rule

Trailing zeros to the right of the decimal are significant

Leading Sigfig Rule

Leading zeros are not significant

+, -, x, / Sigfig Rule

The answer should have the same number of decimal places as the limiting term

Accuracy

The measure of how close a measurement is to the correct or accepted value of the quantity being measured

Precision

The measure of how close you are in a series of measurements are to one another