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Chapter 2: Motion in One Dimension

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Chapter 2: Motion in One Dimension. Introduction. Motion along a straight line. Motion ... Plot v as a function of time. x(t) curve for an upward moving elevator cab ... – PowerPoint PPT presentation

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Title: Chapter 2: Motion in One Dimension


1
Chapter 2 Motion in One Dimension
2
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

3
Motion Along a Straight Line
  • Everything moves!
  • Classification and comparison of motion ?
    kinematics
  • Simplification
  • Motion along straight line
  • Forces cause motion
  • Moving object is a particle or moves like a
    particle

Displacement
4
Velocity
  • Average velocity
  • Average speed
  • Instantaneous velocity

5
Acceleration
  • Average acceleration
  • Instantaneous acceleration
  • Constant acceleration

6
Sample Problem 22
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.
  1. x(t) curve for an upward moving elevator cab
  2. v(t) curve for the cab. Note v
    dx/dt!
  3. a(t) curve for the cab. Note a
    dv/dt!

7
Another Look at Constant Acceleration
  • Integration of acceleration
  • Indefinite integral or antiderivative
  • Constant of integration

You will learn about this in integral calculus!
8
Sample Problem 2-7
9
Free-Fall
  • vv0-gt
  • h-h0v0t-gt2/2
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