Lecture5_Fall2008 - Chapter 5 Homework Chapter 5 Linear...

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1 Chapter 5: Linear Momentum Plan 1 . Definition of linear momentum 2. What can change linear momentum? 3. Impulse 4. Why linear momentum is conserved 5. Solving Problems Chapter 5: Homework z Key Terms and Matching Definitions z Review Questions: 1, 4, 6, 8, 12, 15, 18, 19 z Exercises: 2, 5, 8, 12, 15, 17 z Problems: 1, 2, 3, 4 Definition MOMENTUM= MASS × VELOCITY or, in shorthand notation, p= m v Linear momentum is a vector quantity! Linear momentum Linear Momentum: Examples Problem 1 A car with a mass of 1000 kg moves at 20 m/s. What is the linear momentum of the car? Answer: P = 1000 (kg) × 20 (m/s) = 20,000 kg·m/s or 20,000 N·s Proof: kg·m/s = N·s
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