<Previous | August | September | October | November | December | Next> |
Lecture 2: One-Dimensional Kinematics
August 24, 2017
Reading Assignment
- Read: 2-1, 2-2, 2-3
- 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
Lecture Materials
- Click here for the Lecture overheads
or here for full-size versions.
Answers to Conceptests: (1) 2; (2) 1; (3) 2; (4) 4; (5) 3; (6) 6; (7) 5 (that's the only one with the correct dimensions)
- Movie of banging thingie projectile
Videos of example problems
- Example of using derivatives to calculate velocity and acceleration in 1D
- Example of drawing graphs for 1D motion.
- 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/Eclipse with #Bucknell expedition in Crossville, TN! Clouds vanished just as it went total! pic.twitter.com/l6KBTWThiF
— Tom Solomon (@TheChaoticBird) August 21, 2017