chapter2

# chapter2 - Chapter 2 Motion in One Dimension Kinematics...

This preview shows pages 1–14. Sign up to view the full content.

Chapter 2 Motion in One Dimension

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Kinematics Describes motion while ignoring the external agents that might have caused or modified the motion For now, will consider motion in one dimension ± Along a straight line 0RWLRQ UHSUHVHQWV D FRQWLQXDO FKDQJH LQ DQ REMHFW¶V SRVLWLRQ± Introduction
Types of Motion Translational ± An example is a car traveling on a highway. Rotational ± \$Q H[DPSOH LV WKH (DUWK¶V VSLQ RQ LWV D[LV± Vibrational ± An example is the back-and-forth movement of a pendulum. Introduction

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Particle Model We will use the particle model. ± A particle is a point-like object; has mass but infinitesimal size Introduction
Position 7KH REMHFW¶V SRVLWLRQ LV LWV ORFDWLRQ ZLWK respect to a chosen reference point. ± Consider the point to be the origin of a coordinate system. 2QO\ LQWHUHVWHG LQ WKH FDU¶V WUDQVODWLRQDO motion, so model as a particle Section 2.1

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Position-Time Graph 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. Section 2.1
Motion of Car Note the relationship between the position of the car and the points on the graph Compare the different representations of the motion

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Data Table The table gives the actual data collected during the motion of the object (car). Positive is defined as being to the right. Section 2.1
Representations of the Motion of Car Various representations include: ± Pictorial ± Graphical ± Tablular ± Mathematical ± The goal in many problems Using alternative representations is often an excellent strategy for understanding the situation of a given problem. ± For example, compare the different representations of the motion. Section 2.1

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Alternative Representations Using alternative representations is often an excellent strategy for understanding a problem. ± For example, the car problem used multiple representations. ± Pictorial representation ± Graphical representation ± Tabular representation Goal is often a mathematical representation Section 2.1
Displacement Displacement is defined as the change in position during some time interval. ± Represented as ' x ' x Ł x f - x i ± SI units are meters (m) ± ' x can be positive or negative Different than distance ± Distance is the length of a path followed by a particle. Section 2.1

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Distance vs. Displacement ± An Example Assume a player moves from one end of the court to the other and back. Distance is twice the length of the court ± Distance is always positive Displacement is zero ± ǻ x = x f ± x i = 0 since x f = x i Section 2.1
Vectors and Scalars Vector quantities need both magnitude (size or numerical value) and direction to completely describe them. ± Will use + and ± signs to indicate vector directions in this chapter Scalar quantities are completely described by magnitude only.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 68

chapter2 - Chapter 2 Motion in One Dimension Kinematics...

This preview shows document pages 1 - 14. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online