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Newton’s Second Law Chapter 13 Section 3 Part 2.

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1 Newton’s Second Law Chapter 13 Section 3 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 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 kg kg a = 4 m/s/s


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