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Physics
Experiment 2: Kinematics of Human Motion

Abstract Kinematics is the branch of classical mechanics that describes the motion of bodies and systems without consideration of the forces that cause the motion. There are four activities done in this experiment, graphical analysis of human motion, where displacement vs. time and velocity vs. time were graphed. Graphical analysis of motion where in the 10th seconds the total displacement is 14.69m, average velocity is 1.47 m/s. Reaction time where one of the normal reaction time among the group is 0.4s and the reaction time while someone is distracting the member is 0.5s, and lastly graph matching.

1. Introduction All of us have the ability to move. Knowing how to describe motion is an important first step in understanding the underlying physics that governs changes in motion. We see changes in motion all the time, as we go to work or school, participate in sports or even wander around our homes. If we never changed our own motion, we would never make it out of bed in the morning. The study of motion and of physical concepts such as force and mass is called Dynamics. Kinematics is one of the topics under dynamics. Kinematics describes motion without regard to its causes. In this experiment, kinematics focuses in one dimension: a motion along a straight line. This kind of motion, involves velocity, displacement, and acceleration with regards to time. The objectives of the experiment are to draw the displacement versus time graphs and velocity versus time graphs for uniform motion and uniformly accelerated motion, and to determine one’s normal reaction time and his reaction time while being distracted by others.

2. Theory Kinematics is a branch of mechanics that deals with the concepts needed to describe a motion regardless of its cause (Serway and Vuille, 2011). The motion of an object is the focus of kinematics including its factors such as acceleration and velocity. A velocity is a vector quantity



References: Jacobson, S. H., & Robbins, M. J. (2010). Study: Cell-phone bans while driving have more impact in dense, urban areas. Retrieved December 8, 2012 from http://phys.org/news184945487.html Melissinos and Napolitano. 2003. Experiments in modern physics. Academic Press, USA: Elsevier Science. Serway,R. & Vuille, C. (2011). Physics: Fundamentals. (Vol 1). Philippines: Cengage Learning Asia. Serway, R. & Vuille, C. (2012). Physics Fundamentals I. Hiyas Press Inc., Philippines. [Physics]. Retrieved Dec 8, 2012, from: http://www.mash.dept.shef.ac.uk/ Resources/em1_9constantacceleratio nequations.pdf. [Physics]. Retrieved Dec 8, 2012, from: http://theory.uwinnipeg.ca/physics/o nedim/node8.html

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