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newton's law

May 5th, 2015

First law:When viewed in an inertial reference frame, an object either remains at rest or continues to move at a constant velocity, unless acted upon by an external force.[2][3]
Second law:The vector sum of the external forces F on an object is equal to the mass m of that object multiplied by the acceleration vectora of the object: F = ma.
Third law:When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body

May 5th, 2015

how can I remember them

May 5th, 2015

The way that I remembered (and still do) Newton's Laws of Motion.

The first law - Inertia = I made up a hyphenated word "One - ertia"

The Third Law - equal and opposite = a sideways 3 - turn the three so the
openings of the three are upward - each side of the sideways three is
"equal and opposite"

Once I know which the 1st and third are - the second is the only one left.
acceleration is directly related to the force applied If I push down the
gas pedal in 2nd gear - I accelerate in direct proportion to the force on
the gas pedal.

May 5th, 2015

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May 5th, 2015
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