Human Curiosity

Physics

Physics is the study of matter and energy.

Name some types of energy. Matter: Anything that has mass and occupies space. Energy: The using of force to cause motion. Name some types of energy.

Branches of Physics Mechanics Vibrations and Waves Electromagnetism Optics Thermodynamics

Scientific Revolution Physics as a science begins in the mid 1500’s into the early 1600’s. Physics relates mathematics and reproducible experimentation to the study of matter and energy.

Galileo Galilei (1564-1642)

Birthplace of Galileo? Pisa!!

Basic Units of Measurement Mass : kilograms (kg) Distance/Length : meters (m) Time : seconds (s)

Metric System The metric system allows you to convert from small to large units simply by moving the decimal point.

100 cm = 1 m 2 m = 200 cm 1 km = 1000 m 200 m = 0.2 km 3 kg = 3000 g 1500 g = 1.5 kg

Metric prefixes in everyday use Prefix Symbol Factor Power tera- T 1000000000000 x1012 giga- G 1000000000 x109 mega- M 1000000 x106 kilo- k 1000 x103 (none) (none) 1 x100 centi- c 0.01 x10-2 milli- m 0.001 x10-3 micro- μ 0.000001 x10-6 nano- n 0.000000001 x10-9

Use conversion factors to convert one unit to another. Make sure the units you want to get rid of cancel out.

To convert 1 year to seconds 4 conversion factors are needed. = 3.15x107 s

Convert 5 km/h to m/s. 5 km 1 h = 1.39 m/s 1000m 1 h 1 min _________ X X X 1 h 1km 60 min 60 s = 1.39 m/s