PHYSICS 2 Lecture Notes - Lecture 4: One Direction, Advanced Vector Extensions, International System Of Units
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Physics 2 - lecture 2 - motion in one dimension. Describes motion while ignoring the agents (forces) that caused the motion. For now, will consider motion in one dimension (1d) A particle is a point-like object, has mass but infinitesimal size. The equations we present to you in this class are only valid for particles, or objects that can be behave as particles. Defined in terms of a frame of reference. One dimensional, so generally the x- or y-axis. You must specify the positive and negative direction. The object"s position is its location with respect to the frame of reference. The position-time graph shows the motion of the particle (car) The smooth curve is a guess as to what happened between the data points. The actual position at different times could be much different. The average speed is rate of total distance within total time. Average speed = sav x = (total distance) (total time)
