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Newton’s Laws of Motion


  1. Historical Perspective
    1. Aristotle
    1. Galileo
    1. Isaac Newton
  1. Newton’s Laws of Motion
    1. Newton’s first law of motion

If F = 0

v = 0 (at rest) remain at rest

v v v v





 

 

    1. Newton’s second law of motion

 

 

or

 

 

Acceleration is proportional to force

Acceleration is inversely proportional to mass

( 1N = 1 kgm/s2)

 

5 kg


F1 = 10 N


F2 = 2N

FT = F1 + (- F2)

FT = 10N + (- 2N) = 8N

F = ma

a = F/m

a = 8N/5kg

a = 1.6 m/s2

    1. Mass and Weight
    1. How are mass and weight related?
    2.  

       

       

    3. Why is gravitational acceleration independent of mass?

 

 

 

 

 

 

 

    1. Newton’s third law of motion
    1. How to identify the different forces
    2. The forces that cause a car to accelerate
    1. Applications of Newtons Laws
    2. Newton’s law of universal gravitation

G m1m2


F =
r2

 

F1 F2



Mass 1 Mass 2


r