حلول التدريبات العملية حفظ كمية الحركة

نستخدم مبادئ الديناميكا ونحسب تسارع الجسم: 

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نستخدم مبادئ الكينماتيكا ونحسب سرعة الجسم في نهاية تأثير القوة F، أي في اللحظة t = 4s: 

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اتجاه متجه السرعة نحو اليمين