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Newton’s Second Law

Newton’s Second Law. Chapter 13 Section 2 Part 2. Newton’s Second Law of Motion. The acceleration of an object depends on the mass of the object and the amount of force applied. 1. An object’s acceleration decreases as its mass increases .

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Newton’s Second Law

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  1. Newton’s Second Law Chapter 13 Section 2 Part 2

  2. Newton’s Second Law of Motion • The acceleration of an object depends on the mass of the object and the amount of force applied. • 1. An object’s acceleration decreases as its mass increases. • 2. An object’s acceleration increases as the force on it increases.

  3. Newton’s Second Law Mathematically • Force = mass x acceleration 1 N = 1 kg x 1 m/s/s • F = m x a or a = F/m or m = F/a • Example: What force is necessary to accelerate a 2,000 kg truck at a rate of 5 m/s/s? • F = m x a • F = 2,000 kg x 5 m/s/s • F = 10,000 N

  4. Practice • What is the acceleration of a 2 kg mass if a force of 8 N is used to move it? • a = F/m • a = 8 N or 8 kg x m/s/s 2 kg 2 kg • a = 4 m/s/s

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