Physics 213 Discussion # 17 Wednesday 9-26-2007

0. Announcements.

Test 2 next wed
Hwk 10 will not be due today, turn it in Monday with Hwk 11.

1. Today's OTQ is Q17 = 9d

2. Today's Def's
D12
9-6 Define a perfectly elastic collision.
9-7 Define a perfectly inelastic collision.
9-8 Give the formula for final velocity vf in a perfectly inelastic collision.
9-9 Give the formula for the final velocity v1f and v2f in a perfectly elastic collision.

4. Do wkb chap 7 a&b
5. Do selected problems

6. Assign:

M 9-24	Momentum & Impulse S&J Chap 9 D11: 9-1 to 9-5 wkb chap 7 a&b Q16 = 9b	Science Team Info Due Hwk #9 Chap 8 P 1,5,9,13,31,36, ans 3.92 J, 57B
W 9-26	Collisions S&J Chap 9 D12: 9-6 to 9-9 Q17 = 9d	Hwk #10 Chap 9 P1,4, ans a) -6m/s, b) 8.4 J, 7,9,11,13