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Plz give me all formulas from ch motion and and force and laws of motion ( 9 class) |
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Answer» First law: In an inertial frame of reference, an object either remains at rest or continues to move at a constant VELOCITY, unless acted upon by a force. Second law: In an inertial frame of reference, the vector sum of the FORCES F on an object is equal to the MASS m of that object multiplied by the acceleration a of the object: F = ma. (It is assumed here that the mass m is constant – see below.) 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 |
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