When objects move through water or air, they encounter ____ forces that ____ their motion. This is known as ____. ____ prevents objects from moving or slows them down. It also causes wear on ____ as they rub against each other and generate ____.

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

استعادة الحفظ التلقائي: ؟