Physics

• The third law of motion states that for every action, there is an equal and opposite reaction.
• Physics is the study of matter and energy, and interaction and measurement of forces
• Physics explain our physical environment and predicts how nature will behave
• example of Newton's law is rocketry, while Maxwell's equations is Telecommunication
• Physics is an experimental science that involve the measurement of physical quantity, such as length, area, torque, mass, age, and electric field.
• Measurement are accurate and reproducible when having defined units
• Three system of units are SI Units, CGS System, and British Engineering System
• • The 7 fundamental quantities are: Mass, Length, Time, Temperature, Luminous Intensity, Amount of Matter, and Electric Current
• Unit Prefixes are used to express physical quantity
• The 3 trigonometric functions are: sine, cosine, and tangent
• Scalar quantity (SCALAR) is a numerical quantity without any directions that can described using magnitude and unit only
• Vector is quantity that has both magnitude and direction with unit which determine the position of an object.
• Physical Quantity is cannot be describe by just a single and also quantified by measurement
• 2 types of quantities are: Scalar and Vector quantities
• Arrowhead is pointing the direction of the vector
• Length of Arrow describe the magnitude of vector
• Tail is where the vector begins
• Magnitude refer to distance or quantity that used to express size
• Distance is defined by the total length of path taken by the object
• Displacement is the shortest distance from the point of origin
• Vector Addition is the operation of adding two or more vector quantities together into a vector sum
• Displacement = Vector quantity
• Distance = Scalar Quantity
• The vector addition is so-called THE PARALLELOGRAM LAW
• Physics experiments involve the measurement of a variety of quantities
• The units for length, mass, and time (as well as a few others), are regarded as base SI units.