Chapter 2: Motion in One Dimension. Introduction. Motion along a straight line Motion Position and Displacement Average velocity and average speed Instantaneous velocity and speed Acceleration Constant acceleration: A special case Free fall acceleration.
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Chapter 2: Motion in One Dimension
Displacement is a vector quantity. It has both a direction and magnitude!
An elevator is initially stationary, then moves upward (which we take the positive direction of x), and then stops. Plot v as a function of time.
You will learn about this in integral calculus!