حيث m كتلة الجسم و و تسارع الجاذبية 10m /
s2
يعبر عن مقدار قوة جذب الأرض الجسم بالعلاقة F
=
mg ،
فإن القوة التي تؤثر في جسم كتلتة 40Kg تساوي

f=gm1m2/d^2 it d

f is force g is gravitaiton constant, m1 is mass of first object, m2 is mass of second object. d is distance between two object

some think that theories become laws, but theories and laws have separate and distinct roles in the scientific method. a law is a description of an observed phenomenon in the natural world that hold true every time it is tested. it doesn't explain why something is true; it just states that it is true.

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