## Lecture 2: One-Dimensional Kinematics

August 24, 2017

• Study: Ex 2.1; Figs 2.4, 2.5; Got It 2.2; Ex 2.2; Fig 2.7

### Objectives

• (Continuing objective) Relate concepts of classical mechanics to “everyday” situations and discuss various applications of the concepts to practical problems in various fields of science, medicine and engineering.
• Know the definitions of displacement, average and instantaneous speed, average and instantaneous velocity, and average and instantaneous acceleration. Use these concepts in problems involving moving objects.
• Use graphical methods to relate graphs of position, velocity and acceleration for one-dimensional motion.

### Homework

• Friday's Assigned Problems: A1, A2, A5, A6; CH 2: 6, 17, 23, 47, 95, 96
• Monday's Hand-In Problems: A4, A81, A83, A86, A87; CH 1: 26; CH 2: 14, 20, 24, 46

### Videos of example problems

For the following videos, to see the problem statement, click on the link below. To play the video example, click on the underlined words "Video Demonstration" near the top of the page with the problem statement.
• Video Example #1: Determining displacement from a velocity vs. time graphs for simple case where you can do areas of rec tangles and triangles.
• Video Example #2: Determining displacement from a velocity vs. time graphs where you have to estimate the area under the curve. ans: 16 m

### Pre-Class Entertainment

• Blister In The Sun, Violent Femmes
• Baka, by Outback
• Break on Through, by The Doors
• Blue Suede Shoes, Carl Perkins
• Budapest, George Ezra
• Bury It, Chvrches

### Random note of the day

This past Monday, a group from Bucknell led by Prof. Ned Ladd and Payton Johnson (Class of 2019) went to Crossville, TN to watch the total eclipse and to make scientific measurements.

Here is what the eclipse looked like (yes, it really looked like this -- I took this picture myself with a regular camera; this is what you saw when you looked up into the sky during the period of totality):

For more information, see Payton's and Ned's blog: http://2017solareclipse.blogs.bucknell.edu/ and Instagram account: https://www.instagram.com/bucknelleclipse/