0. Announcements.
Test 1 is 2 SHORT days away!
14 days til Science Team info is due.
T-shirt design is due today!

1. Today's OTQ is Q9 = 6a f 2

2. Today's Def's
D7
5-6 What is a "free body diagram"?
5-7 What is a normal force Fn = n (in text) acting on an object and why is it called normal?
5-8 Defend or disprove:
Static Friction force Fs = µsFn
Kinetic Friction force Fk = µkFn
5-9 The direction of the kinetic friction force is always ______ the direction of motion.

Chapter 6: Circular Motion

6-1 Define Centripetal acceleration.
6-2 Give the formula for centripetal acceleration of an object moving in a circle.
6-3 Forces causing centripetal acceleration always are directed toward the _________.
6-4 Hence the positive direction in a circular motion problem is always __________.

3. Do Wkb Cahp 5 c & d

M 9-10

FBD's & applications of N's Laws S&J Chap 5 & 6 wkb chap 5 c&d D7: 5-6 to 6-4 Q10 = 6af2

Hwk #5 Chap 5 P 3,9,11,14a&b, ans a) 181° ccw, b) 11.2 kg, 14 c&d, ans c& d) 37.5 m/s, 15

We did not do Chap 5 d

W 9-12

Test 1 (First Hour) S&J Chap 7Work D8: 7-1 to 7-5 wkb Chap 6a Q11 = 6b

Hwk # 6 Chap 5 P 21,25,29,41.55, Chap 6 19, 17 B