Physics: The Science of Measurements - Coggle Diagram
Physics: The Science of Measurements
1.6 Fundamental Kinematic Quantities: Distance, Displacement,Speed, Velocity, Acceleration,Mass and Weight.
The kinematics is the study of the types of movements that a body can have and its mathematical description.
Movement. It can be said that is a change of position of a body in space and through time.
Distance. It is simply the space traveled by the body during the change of position.
Displacement. It is the distance traveled in a straight line from an initial position to and end position
Velocity. Is the relashionship between the displacement that travels an object and time spent on it.
Speed. Is the distance traveled per unit of time( is the relationship between the distance traved by a body and the times it takes to travel).
Mass. The mesaure of the inertia of the bodies.
Force. Is every agent capable of producing a change in the movement of bodies.
Weight. Is the force with which the Earth attracts a body due to the action of gravity.
1.7 The Measuring Instruments
Lenght measuring. In Antiquity, the human being used tools to identify the dimensions of objects and places. At first they used teir own body for that purpose but currently the one very used is the nonio.
Mass Measurement Instruments. To measure the mass of the objects the balance are used. At the present we use analytical balances, electronical and others with a great accuracy than a common scale.
Instruments for Measuring Time. In the Antiquity they used such as the shadow cast by sun, candles, the hourglass. Now we use the mechanical clock, the quartz clock, the digital chronometer and the atomic clock. The first atomic clock was built in 1949 at the National Standars Office.
1.8 Safety Regulations when Using Measuring Instruments
Think about what you atre doing, do it carefully and with the material and handling of the laboratory instruments that will be used in the programmed practice. Pay attention to what the teacher points out to you.
Follow carefully the instructions of the laboratory practice and the instruction manual of the measuring intruments. If you have any doubt about its use, consult it with your teacher.
Within the laboartory you should wear the right clothes: safety glasses, gloves, gown or dust cover and everything your teacher tells you.
4.Do not drink or eat in the laboratory.
Pay attention to the instructions of the teacher or laboratory assistent.
Always keep the laboratory clean and tidy; Save the material and equipments after use.
Keep the place where any instrument with electrical contacts perfeclty clean and dry. Read the instructions for using the instruments.
Your teacher or the personnel in charge of the laboratory should be supervising the practice at all times and should never be absent from the laboratory.