Newtons Laws Flashcards
What is Newton’s first law?
An object at rest remains at rest, or in uniform motion unless acted on by a resultant Force
What is Newton’s second law?
The rate of change of momentum of an object is proportional to the resultant Force unit. If the mass is constant, this law can be written as F = ma
What is Newton’s third law?
When two objects interact, they exert equal and opposite forces on each other.
An example of Newton’s first law
An example of Newton’s First Law, also known as the law of inertia, is when you’re riding in a car that suddenly comes to a stop. Your body continues to move forward even after the car has stopped because no external force has acted directly on you to stop your motion. This illustrates the principle that an object in motion stays in motion unless acted upon by an external force. Your seatbelt is the external force that eventually stops you from moving forward.
An example of Newton’s second law
Pushing a shopping cart: the harder you push (more force), the faster it accelerates. A heavier cart (more mass) requires more force to achieve the same acceleration.
An example for Newton’s third law
When you jump off a boat, you push the boat backward as you propel yourself forward. This illustrates Newton’s Third Law: for every action, there is an equal and opposite reaction.
