Chapter_4-5 - Ch 4 Newton's Laws of Motion Focus Problem...

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Ch 4: Newton’s Laws of Motion Focus: Problem solving with force diagrams Newton’s Laws: 1) If no force: v = constant ) 0 or 0 ( M F a = 2) Acceleration proportional to force and inversely with mass: 3) Two objects exert forces on each other of equal magnitude and opposite direction: F 12 = - F 21 Forces are vectors! (A push or a pull) Unit: Newton (N) is the force needed to accelerate a 1 kG mass at 1m/sec 2 = i i F a M = Total force acting on mass M Memorize this!
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