{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# lab_5 - LAB#5 VELOCITIES INTRODUCTION When we talk about...

This preview shows pages 1–2. Sign up to view the full content.

LAB#5 VELOCITIES INTRODUCTION: When we talk about motion, we are describing a physical body changing its position in time with respect to some frame of reference: usually the one in which the observer is at rest. The motion of the body may be complicated, and you will have a chance to analyze many such motions in your Physics course. However, we will start with the simple case of a body moving in a straight line. In Physics, motion in one dimension is described in mathematical terms by giving the position of the body as a function of time. The average velocity during a certain time interval is defined as the “distance traveled” in the time interval divided by the “time interval”. Instantaneous velocity is a more abstract concept than average velocity. It refers to the velocity at one particular time, not the average over some time interval. Since in practical terms, we always need a finite time interval and distance covered for a velocity measurement, we can only approximate instantaneous velocity measurement by making our intervals as small as possible. Average velocity is defined as distance traveled in an interval of time divided by the elapsed time. This agrees with our everyday notion of the word speed. Velocity is defined as a vector, for which the direction as well as the speed is important. In this experiment, all the motion is in a single straight line, so here there is no real difference between "velocity" and "speed" except a + or - sign.

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 ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern