Phys 0174 Fall 2008 - Chapter 02, 4 slides

# Phys 0174 Fall 2008 - Chapter 02, 4 slides - Chapter 2 .x...

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1 Chapter 2 Motion Along a Straight Line ¾ Displacement ¾ Average Velocity ¾ Average Speed ¾ Instantaneous Velocity ¾ Average Acceleration ¾ Instantaneous Acceleration ¾ Equations of Motion for Constant Acceleration 2 Kinematics is the part of mechanics that describes the motion of physical objects. In this chapter we will study a restricted class of kinematics problems where the motion will be along a straight line. Consider an object moving along a straight line taken to be the x-axis. The position of the object at any time t is described by its coordinate x(t) defined with respect to the origin O. The coordinate x can be positive or negative depending whether the object is located on the positive or the negative part of the x-axis 3 Displacement is a vector quantity that has both magnitude and direction. In this restricted one-dimensional motion the direction is described by the algebraic sign of x 21 Displacement: x xx =− Consider as an example the motion of an object from an initial position x 1

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## This note was uploaded on 10/18/2011 for the course PHYS 101 taught by Professor Cohen during the Spring '10 term at Pittsburg State Uiversity.

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Phys 0174 Fall 2008 - Chapter 02, 4 slides - Chapter 2 .x...

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