Physics easy

• 1m / 3.281 ft
• 1 km / .6214 miles
• 1 ft / 12 in
• 1 nautical mile / 1852 m
• 1 yrd / .9144 m
• 1 rad = 180°/π
• 1 rev = 2π rad
• 1 knot = 1 nautical miles / hr
• 1 slug / 14.59 kg
• 1 lbf / 4.448 N
• 1 kip = 1000 lbf
• 1 tonf = 2000  lbf
• 1 W = 1 NM/s = 1.34×10^-3 hp
• 1 Pa = 1N/m^2
• 1 bar = 10^5 Pa
• 1 Psi = 1 lb/in^2 = 6891 Pa
• 1 kg / 2.205 lbm
• 1 ATM / 101325 pa
• 1 ATM / 760 mmHg
• W= Delta Pe + Delta Ke
• W= F Dcos
• Ke= 1/2 mv²
• Pe= mgh
• V2 = V1 + at
• S = 1/2 (V1 + V2)t
• S = V1t + 1/2 at²
• V2²= V1² + 2as
• G=6.67428 × 10^-11
• Physics is a science
• Science works according to the scientific method
• The aim of Natural Philosophy is the discovery and formulation of the fundamental laws of nature
• Branches of Physics

  • Classical Mechanics
  • Electromagnetism
  • Thermal Physics
  • Quantum Mechanics
• Classical Mechanics


  Deals with the motion of bodies
• Electromagnetism


  Studies how charges behave
• Thermal Physics


  Studies the nature of heat
• Quantum Mechanics


  Deals with the physics of small objects
• Measurement


  The process of comparing something with a standard
• Unit


  Standard measure of quantity
• Measure


  Quantity, capacity or weight compared to a designed standard
• Types of measurement systems

  • Metric System
  • English System