Physics

Measurements

Is the comparing physical quantities with the standard

Physical Quantities

Is a measurable features or properties of the body

What’s standard mean?What’s thr 3 standards for physical quantities?

Standard is something set up by a authority as a rule for measuring

1-Must be universally accepted

2-Have a value that doesn’t change with space and time

3-it must be found in the laps.

Whats Scientific notation?

Is the shortest way of writing large and small numbers

Define Prefixes?

Is a symbol stands for a number on a power of ten

What’s unit conversion?

Is the process of converting a measurement from one unit to another while maintaining the same quantity

Derived unit

Is the combination of basic units with specific names

Density

Kilogram per meter cubic,kg/m³

Speed

Meter per second,m/s

Energy

Joule,kilogram meter cubj per second square,kgm³/s²

Force

Newton,kilogram meter per second square,kgm/s²

Pressure

Pascal,netwon per meter square,N/m²

Frequency

Hertz,one wave cycle per second,1/s

Volume

Meter cubic,m³

Acceleration

Meter per second square,m/s²