Newton's Laws of Motion: Understanding the Fundamentals of Motion and Forces, Quizzes of Physics

Download Newton's Laws of Motion: Understanding the Fundamentals of Motion and Forces and more Quizzes Physics in PDF only on Docsity! Reading Quiz Class 11 9/20/02 Please enter your name: 1. Keith Graham 2. Laura Bender 3. Mark Kretzer 4. Ian Schumacher 5. Tom Cassidy 6. Sara Halper 7. Megan Fulop 8. Drew Calvert 9. Griff Williams 10. R. Jeff Bloch 11. Jeff Costello 12. Richard Petroni 13. Tim Hinkle 14. Rachael Garrison 15. Jeff Goerlitz 16. Megan Evanoka Your neighbor asks you what you've been doing in that pretentiously named "Secrets of the Universe" class. You explain that you're learning about Newton's laws of motion. Your neighbor has never taken a physics class and doesn't have a clue what you're talking about. Explain, in every day common language, what Newton's laws of motion are and why they are important. 1. 1) An object that's in motion "likes" to stay in that straight line motion. So, in space, if I threw an object, it would travel away from me forever in a straight line, unless it was acted upon by another force. Also, an object at rest (not moving) will remain that way untill acted upon by an outside force. 2) F=ma This is just a formula that helps to make predictions involving the first law. 3) For every action, there is an equal and opposite reaction. This means that energy and forces balance each other out, so when I threw that object in space I would move the opposite direction proportional to my mass versus the objects mass. 2. Newton, a really famous physicist, came up with 3 laws concerning motion. First, an object that is moving, stays moving forever and ever, unless some force acts upon it. For example, if you throw a ball on earth, there is obviously some forces acting on the ball because it eventually stops. Second, to measure the amount of force on an object, one needs to consider two factors-mass and acceleration of the object. Without those factors, the force can not be determined. Third, Newton discovered that for every action, there is an equal and opposite reaction. For example, if you apply a force on something, that something will apply some form of a force back to you. 3. newtons laws are 3 exremely universal concepts regarding the nature of things in our universe. They help scientists give meaning to things, and also help as a common ground idea for them to focus on. They can be seen as a guideline of basic principles to always remember when doing any experiment of problem in physics. 4. 1 - An object that isn't moving is lazy and doesn't want to go anywhere. It takes force to move it. Once it begins moving, however, it doesn't want to stop, and so, force is once again required to stop it. This is important because we can get certain vales from the object based on these facts. 2 - The more force on an object, the faster it speeds up. However, the bigger it is, the more it resists the force, and the slower it speeds up. This is important as you can determine how much force you need to move an object. 3 - When something puts force on something else, that something else puts an equal force right back at the original object. This lets us explain why certain things happen, like the moon orbiting the earth. 5. Newton's laws define the motion of objects and explains how and why they move like they do. His laws clarify the mysterious reasons for movement and predictability. Newton's laws are important because they provide explanations and equations for predicting different aspects of motion. 6. newtons laws of motion make 3 basic assumptions first that objects liek to remain in straightline motion, unless acted upon by an outside force. The second is the calculation that force is equal to mass times acceleration, and finally that for every action there is an equal but opposite reaction. These are important as they are influential in predicting the future. 7. Newtons first law simply states that an object at rest likes to stay at rest and in object in motion likes to maintain that motion unless acted on by an outside force. Newton's second law states that the amount of force is equal to the product of mass times acceleration (how fast something is goin with respect to time). Newton's third law states that for every action, there is an equal and opposite reaction. These laws are important because they relate exerted forces and the changes in motion of an object. 8. Newton has three laws of motion. The first is that any object in motion is going to stay in that straight line motion unless acted upon by an external force. The second law is: an impressed force onto an object is equal to its mass time acceleration, and the third law is that every action has an equal and opposite reaction. These laws are important because they help physicists predict the future. It is important and impressive that Newton was able to conceive that an object falling to the earth was actually being acted on by a force--it doesn't "want" to fall. 9. 1) Law of inertia- An object will continue in a state of uniform motion in straight lines. Things keep going unless something acts on them. If you throw a ball it will keep going untill something stops it like gravity or air. Law of acceleration- how much an objuct moves depends on the mass of the object and the amout it is pushed. For example a truck with a go cart engine will not go as fast as a go cart with a gocart engine, becasue the truck weighs too much. 3 Every action has an equal and opposite reaction. If you push on a wall, the wall pushes back with the same force. 10. Newton's First Law of Motion explains that, unless some kind of outside force affects an object, that object will continue in its previous motion. For instance, an object will remain at rest unless an outside force (like gravity), acts on it. Newton's Second Law of Motion pretty much explains how an object's momentum is calculated by its mass times its acceleration. Newton's Third Law of Motion explains how every action has an equal and opposite reaction. For instance, if you are wearing rollerblades, and you push against the car in front of you, you will move backwards. This is because the force you applied while pushing the vehicle is also applied to your body (thus the equal and opposite part), pushing you backwards. All of these laws are extremely important in studying and understanding the laws and workings of physics. 11. The first law basically states that moving objects continue moving unless something stops them, and stationary objects remain stationary unless something acts on them forcing them to move. If you are driving a car without a seatbelt and hit another car you will fly through the window because your body which was in motion will not stop moving until something stops it. The second law states that F=MA. Acceleration is produced when some force acts on a mass. The more mass something has, the more force is needed to get it to accelerate in some direction. The third law states that every action has an equal and opposite reaction. Everytime you act on something in the world it will react back in some way. If you hit someone with a bat you will feel a sting because the persons head will exert a force on the bat that you will feel. If you drunkenly hit on a girl she will react by slapping you. These laws are important because they set the basic framework for all other concepts of motion and force in the universe. They are always present and you cannot have one without the other. 12. The first law is the law of inertia which means if we were in a car and it crashed we would both go through the windshield because our body wants to continue moving at the same speed we were going. The second law is the law of acceleration. Acceleration is causes by the force on an object. The third law is the action reaction law which states that if I push you, my action, your reaction will be to fall over or move in some way. The fourth law is the law of gravity which means that if you jump in the air, gravity will cause you to fall. They are important laws because they describe the way the universe works. 13. Newtons laws of motion are important because they tell us in a very basic sense how all motion in the Universe occurs. The first law is that something will do what its doing unless you do something to it. The second law is that the more you do something to something else, the faster it will speed up, but the bigger it is, the slower its "speeding up" will be. The third law is that whatever you do, will be done back to you in an equal and opposite fashion. 14. Newton's first law of motion says that something will keep moving along the same path until something else stops it or changes it. The second law deals with momentum and says that as you increase the force the acceleration increase and/or the mass decreases. Newton's third law says that if a force acts on an object, the object will exert the same force in the opposite direction. 15. Basically, Newton's laws of motion explain how our universe works. They describe how objects interact with one another, and why objects do what they do. Clearly when an object is held in the air and drops, something happens. One of newton's laws of motions tries to explain this. Newton's laws also explain why objects at rest tend to stay at rest unless acted upon, and visa versa. 16. Newton's laws of motion explain what objects in motion (or objects not in motion) do when acted upon by an external force and when they are not acted upon. They are important because they help us to understand the nature of things in motion and why the act the way they do. By understanding that force is equal to mass times acceleration, we can effectively adjust experiments and control variables to learn more about objects and their motion. Name the four fundamental forces, give a brief description of them, and list them in order of INCREASING strength.