three graphs were sketched for displacement versus time and three graphs for velocity versus time. Hick (1952) discovered that the reaction time increases proportionally to the number of possible responses until a point at which the response time remains constant despite the increases in possible responses (Hick's Law).įor the first activity of the second experiment, “Graphical Analysis of Human Motion,”. If there are several possible responses (choice reaction time) then it will take longer to determine which response to carry out. If there is only one possible response (simple reaction time) it will only take a short time to react. A primary factor affecting a response is the number of possible stimuli, each requiring their own response, that are presented. It is the interval time between the presentation of a stimulus and the initiation of the muscular response to that stimulus. Lastly, for the 4 th activity we were asked to compute for the reaction time using the formula Instantaneous velocity was also computed by multiplying the velocity by 2. The velocity was computed using the formula v=. The third activity wherein a person was asked to walk for ten seconds then distance travelled was recorded. The program will prepare plots of the data, compute statistics like the mean, fit specified curves to a data series, and calculate derived quantities. Pictorial data can be reduced to x-y coordinates of selected objects, while sensor data is presented in tabular form as a function of time. It can accept input from a video camera, read a video file or, through the LabPro interface device, acquire data from a variety of other sensors. LoggerPro is a general-purpose program for acquiring, graphing and analyzing data. The first and second part focused on the Graphical analysis of human motion and graph matching, wherein a Logger pro was used to detect motion of a certain object. This experiment was divided into three parts. To determine one’s normal reaction time and his reaction time while using his cellphoneīy the end of the experiment, the concept of kinematics as well as the relationship of the five aforementioned variables, through graphical analysis, would be better understood.To draw the displacement versus time graphs and velocity versus time graphs for uniform motion and uniformly accelerated motion.The objectives of this experiment are the following: It involves five variables - displacement, initial velocity, final velocity, acceleration and time. Kinematics is a branch of physics that involves defining motion without considering the masses and forces involved. Lastly, the Reaction Time activity presented the relationship of time, distance and the acceleration due to gravity. The Graphical Analysis of Motion activity permitted us to compute for the average and instantaneous velocity, and analyze the motion done by one of our group mates. The Graph Matching Activity allowed practical experience on how points on graph depicting kinematics actually means. The Graphical Analysis of Human Motion yielded graphs showing the relationship of displacement versus time and velocity versus time in four different circumstances. This experiment is divided into four activities namely, Graphical Analysis of Human Motion, Graph Matching, Graphical Analysis of Motion, and Reaction Time. Alcantara,Ĭollege of Science, University of Santo Tomas
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