PHYS 101 Chapter Notes - Chapter 2: One Direction

• School: McGill University
• Department: Physics
• Course: PHYS 101
• Professor: Kenneth Ragan

Document Summary

Chapter 2: describing motion: kinematics in one dimension. Kinematics deals with the description of how objects move. The description of the motion of any object must always be given relative to some particular reference frame. The displacement of an object is the change in position of the object. Average velocity time period over which we chose to make our observations. Average speed is the distance traveled divided by the elapsed time or time interval, (cid:1872), the. Average velocity over a particular time interval (cid:1872) is its displacement during that time interval, divided by (cid:1872): The instantaneous velocity, whose magnitude is the same as the instantaneous speed, is defined as the average velocity taken over an infinitesimally short time interval. Acceleration is the change of velocity per unit time. An object"s average acceleration over a time interval (cid:1872) is: Where is the change of velocity during the time interval (cid:1872).