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i ZOOM 11 Sedon # O o c o 6 ONE-DIMENSIONAL KINEMATICS: PART 1 LIFE IN THE FAST LANE Motion pervades every aspect of our lives. From sitting still to launching a rocket into space, physics gives us a method to understand mathematically, verbally, and graphically what mo- tion looks like. Kinematics Equations of Motion An object's position can change after some time t, from an original position x to a new posi- tion x . Similarly an object can have a velocity v at some time with an original velocity v All objects we are looking at have a constant acceleration, a . If there is a change in a quan- tity it can be expressed as: AR Isaac Newton was able to describe motion using three equations. x=xo+ vot4-at2 v o+at (1) (2) (3) These equations are used to fully understand motion both in one dimension, which we will investigate this week and two dimensions, which will be conducted later in the semester. 11