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Lecture 4

More on 1d motion with a constant acceleration

1. PQ2-5
2. Falling ball- Based on the standard coordinate (y>0 for upward direction)
3. Time reversed motion: Discussion related to “HW2-18, 2-19”.
4. Hints on HW2-8.

Vectors

• Definition
• Addition and subtraction
• Dot product: Law of cosine
• “HW 2-24”

Reminder:

• There will be an instructor’s discussion session today, 4-5pm in ECJ 1.204.
• From this point on. whenever we meet for the Friday session it will be in ECJ 1.204, not in RLM5.116.(Please make this change in your firstday handout)

To do list:

• Study chapters 2 and 3, including all textbook examples.
• Look at problems of chapters 1, 2 and 3 in the PQ library
• Complete HW2 during this week end.
• Download hw3, preview chapter 4.