Name: newton's laws and everyday motion
Uploaded: 2025-05-22T09:06:01.000Z
Duration: 1 min 20 s
Channel: JoVE

K12 Standards

south-carolina-college-and-career-ready-science-standards

South Carolina College and Career Ready Science Standards

High School

Physics

motion-and-stability-forces-and-interactions

Motion and Stability: Forces and Interactions

P-PS2-1

Newton's Law of Motion

يمكن تفسير حركة الجسم أو سكانه باستخدام قوانين نيوتن للحركة.
ينص القانون الأول على أن الجسم في حالة سكون يبقى في حالة سكون والجسم المتحرك يظل متحركا بسرعة واتجاه ثابتين ما لم يتم التصرف بناء عليه بقوة غير متوازنة.
تبقى كرة القدم في حالة راحة حتى يركلها اللاعب وتبقى في حالة حركة حتى يتم تطبيق قوة خارجية لإعادتها إلى الراحة.
ينص القانون الثاني للحركة على أنه عندما تؤثر قوة غير متوازنة على جسم ما ، فإنها تتعرض لتسارع له حجم يتناسب طرديا مع القوة وله نفس اتجاه القوة.
ضع في اعتبارك رجلا يحمل عربة. عندما يطبق القوة على العربة ، تتحرك العربة في اتجاه القوة المطبقة.
ينص القانون الثالث على أنه لكل فعل ، هناك رد فعل متساو ومعاكس.
عندما تصطدم سيارة متحركة بشاحنة ثابتة ، فإنها تمارس قوة متساوية ومعاكسة على السيارة.

<ol>
	<li>هيبلر ، آر سي (2016). الميكانيكا الهندسية - الإحصاء والديناميكيات. هوبوكين ، نيو جيرسي: قاعة بيرسون برنتيس. ص 4 - 5.</li>
	<li>بير ، إف بي ؛ جونستون ، إي آر ؛ مازوريك ، د. إف. كرومويل ، بي جيه وسيلف ، ب. (2019). ميكانيكا المتجهات للمهندسين - الإحصاء والديناميكيات. نيويورك: ماكجرو هيل. ص - 3.</li>
	<li>مريم ، جي إل. كريج ، إل جي ، وبولتون ، ج. (2020). الميكانيكا الهندسية - الإحصاء. هوبوكين ، نيو جيرسي: جون وايلي. ص - 2.</li>
</ol>

قانون نيوتن للحركة.

<div style="direction:rtl">عندما نراقب الأشياء حولنا، قد يتبادر إلى الذهن سؤالا هو لماذا تتحرك هذه الاشياء أو تظل ثابتة. يمكن شرح إجابة هذا السؤال باستخدام قوانين نيوتن للحركة. تصف هذه القوانين المبادئ الأساسية للحركة وتأثير القوى على الأجسام. ينص القانون الأول للحركة، المعروف أيضًا بقانون القصور الذاتي، على أن الجسم الثابت سيظل ثابتًا والجسم المتحرك سيستمر في التحرك بسرعة واتجاه ثابتين ما لم تؤثر عليه قوة خارجية. على سبيل المثال، عندما يتباطأ صندوق منزلق بشكل ذاتي، تكون القوة الخارجية المحصلة المؤثرة على الصندوق هي قوة الاحتكاك التي تعمل ضد حركة الصندوق وتبطئه. يفترض القانون الأول لنيوتن ان جمبع الاجسام تكون اما في حالة سكون أو في حالة الحركة بسرعة ثابتة. لكن ، إذا تغيرت سرعة الجسم ، فإن الحركة المتسارعة يتم وصفها بواسطة قانون نيوتن الثاني. يصف قانون نيوتن الثاني للحركة كيفية استجابة الجسم لتأثير قوة غير متوازنة تؤثر عليه. ينص القانون على أن تسارع الجسم يتناسب طرديًا مع القوة المؤثرة عليه وتناسب عكسيًا مع كتلته. على سبيل المثال ، عندما يضرب شخص الكرة ، فإنها تتحرك بتسارع يتناسب طرديًا مع القوة المؤثرة عليها. ينص قانون نيوتن الثالث للحركة، المعروف أيضًا بقانون الفعل ورد الفعل، على أنه لكل فعل رد فعل مساوٍ له في المقدار ومعاكس في الاتجاه. على سبيل المثال ، إذا وقف شخص مرتديا حذاء ذو عجلات وقام بألقاء كرة إلى الأمام، فمن المحتمل أن الشخص سيبدأ في التحرك إلى الخلف بسرعة معينة. تتمتع قوانين نيوتن للحركة بتطبيقات عديدة في العالم الملموس الحقيقي. على سبيل المثال ، يمكن استخدام القوانين لتصميم هياكل وآلات بتصميم يجعلها تتحمل القوى الخارجية. يمكن أيضًا رصد مسارات الأجسام السماوية أو الصواريخ باستخدام قوانين نيوتن للحركة. في النهاية، توفر قوانين نيوتن للحركة أساسًا لفهم العلاقة بين تأثير القوى والحركة. هذه القوانين حجر اساس العديد من مجالات العلوم ولها تطبيقات عملية تؤثر على حياتنا اليومية. سواء كنا نشاهد مباراة كرة قدم أو نطلق مركبة فضائية ، نعتمد على هذه القوانين لشرح حركة الأجسام وتأثير القوى عليها.</div>

عندما نلاحظ الأشياء من حولنا ، فإن أحد الأسئلة التي تتبادر إلى الذهن هو لماذا تتحرك أو تبقى ثابتة. يمكن شرح الإجابة على هذا السؤال باستخدام ...

Education

JoVE Core

Mechanical Engineering

الهندسة الميكانيكية

Unit 1

الوحدة الأولى

An Introduction to Statics

مقدمة في علم السكون (الاستاتيكا)

KEY TERMS AND CONCEPTS

المصطلحات والمفاهيم الأساسية

newton's laws and everyday motion

Newton's laws explain everyday motion and the forces that change it. These three laws describe why objects move, stay still, or speed up. They also show how force and mass affect motion.

Newton's first law is the law of inertia. It says an object at rest stays at rest, and an object in motion keeps moving at a constant speed and direction unless an external force acts on it. A sliding box that slows down on its own is a good example. In that case, friction is the net external force that works against the box and reduces its motion.

Newton's second law applies when velocity changes. It describes how an object responds to an unbalanced force. The law states that acceleration is directly proportional to the applied force and inversely proportional to mass. If a person hits a ball, the ball accelerates more when the force is larger.

Newton's third law is the law of action and reaction. It states that for every action, there is an equal and opposite reaction. A person on roller skates who throws a ball forward will move backward. Newton's laws are useful in the real macroscopic world. They help scientists design structures and machines that can withstand external forces, and they can also be used to calculate the motion of celestial objects and rockets.

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P-PS2-6.

Newton's Laws and Everyday Motion

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