# pp17 - PHYSICS A World View Tuesday 22 March 2005 READ PRAC...

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PHYSICS: A World View Tuesday, 22 March 2005 READ Ch 15 (pp 310-314, 317); PS 15: 5-6 PRAC Ch 7: Q 29, 31, 39, 47; E 15, 23; P 25 Ch 15: Q 1, 9, 17, 23, 25; E 5 HW #17 Ch 15: Q 6, 12, 22; E 14 Th 24 Mar

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QUIZ #2 0 1 2 3 4 5 6 7 20 22 24 26 28 30 32 34 36 38 40 42 Ave = 29.6/40 = 75.0%
PHYSICS 103 -- Fall 2004 1. 1. How much work does a horizontal How much work does a horizontal 40-N force perform on a 4-kg box 40-N force perform on a 4-kg box in moving it 8 m? in moving it 8 m? 2. If the box starts from rest, how 2. If the box starts from rest, how much kinetic energy does it have much kinetic energy does it have after moving the 8 m? (Assume a after moving the 8 m? (Assume a frictionless surface.) frictionless surface.)

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How much work does a horizontal 40-N force perform on a 4-kg box in moving it 8 m? 1 2 3 4 5 0 1 23 0 0 1. 5 J 2. 10 J 3. 32 J 4. 160 J 5. 320 J 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
PHYSICS 103 -- Fall 2004 In-Class Activity W Fd = ( 29 ( 29 40 N 8 m 320 J = =

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much kinetic energy does it have after moving the 8 m? 1 2 3 4 5 0 1 19 3 1 1. 5 J 2. 10 J 3. 32 J 4. 160 J 5. 320 J 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
PHYSICS 103 -- Fall 2004 In-Class Activity W KE = ∆ f i KE KE W = + 0 320 J = 320 J = +

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PHYSICS 103 -- Fall 2004 3. A 0.5-kg ball falls a distance of 3 m. 3. A 0.5-kg ball falls a distance of 3 m. How much gravitational potential How much gravitational potential energy does it lose?
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pp17 - PHYSICS A World View Tuesday 22 March 2005 READ PRAC...

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