# W2.1 - Physics for Scientists Engineers 1 Spring Semester...

This preview shows pages 1–6. Sign up to view the full content.

January 11, 2008 Physics for Scientists&Engineers 1 1 Physics for Scientists & Physics for Scientists & Engineers 1 Engineers 1 Spring Semester 2008 Lecture 5

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

View Full Document
January 11, 2008 Physics for Scientists&Engineers 1 2 Coming this week: Coming this week: Motion of objects in a straight line, in one dimension. The concepts of position, displacement, and distance. Position, velocity, and acceleration vectors of objects moving in a straight line. Computing the velocity and acceleration of objects moving in a straight line. Mathematical description of motion with constant acceleration. Free fall without air resistance.
January 11, 2008 Physics for Scientists&Engineers 1 3 Position Position Vectors for one-dimensional motion have only one component, x -component for now. Use the symbol x to denote position vector Note: we leave the vector arrows off for 1d vectors All position vectors are measured relative to the origin of the coordinate system, which can be chosen arbitrarily Vector x can be positive or negative (its magnitude is again always positive, though) Examples for proper 1d position vectors (SI-unit m , + or -) Position vector is a function of time Notation for the time-dependent position vector: x ( t ) Notation: Vector x at some specific time t 1 : x ( t 1 ) =x 1 7 16 0.73 m, 4' 3 ", 13.6 km x x x = = = ! 0 x x x ( t ) t t 1 x ( t 1 )

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

View Full Document
January 11, 2008 Physics for Scientists&Engineers 1 4 Graphical Representation Graphical Representation Example: Car is driving down the road (top view) As the car passes the blue dot, we start our clock and record its position in regular time intervals Case 1: constant speed Case 2: speeding up Case 3: coming to a halt
January 11, 2008

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