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Date: 29-12-2016
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Date: 10-3-2021
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Date: 6-3-2016
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Linear Momentum of a Point Particle
A more fundamental way of discussing Newton's second law is in terms of a new quantity called momentum. It is defined as
and it is important because it is a conserved quantity just like energy. The proper way to write Newton's second law is
Now if the mass is constant. Thus
if the mass is constant. (If the mass is not constant then
so that Newton's second law actually reads
.
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لخفض ضغط الدم.. دراسة تحدد "تمارين مهمة"
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طال انتظارها.. ميزة جديدة من "واتساب" تعزز الخصوصية
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مشاتل الكفيل تزيّن مجمّع أبي الفضل العبّاس (عليه السلام) بالورد استعدادًا لحفل التخرج المركزي
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