...Physics 100A Homework 4 – Chapter 5 Newton’s First Law A) If a car is moving to the left w ith constant velocity then the ne t force applied to the car is zero. B) An object cannot remain at rest unless the net fo rce acting on it is zero. C) An object has constant acceleration if the net force acting on it is constant. Understanding Newton’s Laws A) An object cannot remain at rest unle ss the net force acting on it is zero. B) If a block is moving to the left with constant ve locity the net force applied to the block is zero. C) A block of mass 2 kg is acted upon by two forces: 3N (d irected to the left) and 4N (directed to the right). What can you say about the block's motion? The net force is point to th e right, so the object could - be moving to the right and acceler ating to the right (speeding up) - be moving to the left and acceler ating to the right (slowing down) - be at rest and on the ve rge of moving to the right D) A block pulled with a constant force will have a constant acceleration in th e same direction as the force. E) Two forces, of magnitude 4N and10N, are applied to an obj ect. The relative direction of the forces is unknown. The two limits for adding the forces give that the magnitude of the net force must be NFN net 14 6 ≤≤ So 5N is excluded Free-Body Diagrams Chadwick is pushing a piano across a level floor (see the figure). ( Intro 1 figure ) The piano can slide across the floor without friction. If...
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...Professor PHYS 2010 October 21, 2014 Physics in Our Daily Activities Physics is a very important science that can almost be found anywhere in our lives. Many people find this statement hard to believe because they are not able to see the basic aspects of physics all around them. I personally think that unless the person is a physicist or at least someone who had some physics classes, chances are this person or someone is not going to understand how much physics affects our daily life. The significant effect of physics on us today can be easily seen when looking at our reliance on modern technology. Many of the technologies that are changing the world around us are based on physics principles. Physics is more than a subject we study in class, it is also a powerful tool that can help us to gain a better understanding of the everyday world. Physics can be seen in a lot of simple games that we play all the time. One of my favorite games that I almost play on a daily basis is pool. The physics associated with pool is mainly about the collisions between the pool balls. When two pool balls hit each other or collide the collision between them is known to be an elastic collision. According to Billiards in the Classroom, "elastic collisions are collisions in which both momentum and kinetic energy are conserved. The total system kinetic energy before the collision equals the total system kinetic energy after the collision." Therefore, we can assume that the collisions that happens...
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...influential scientist that ever lived. His theories and laws surround us in everyday life and have built the basis for the study of physics. One of his main focuses as a scientist was the relevance of forces and motion in everyday life. He has come up several laws regarding motion and they have been used in helping mankind to get as far as they have with understanding physics. Space travel is possible because of the theories that Newton provided us with and you can see that in the movie Apollo 13, which retells a story of three astronauts who use mainly the laws of physics to get back to Earth after their space shuttle is damaged from an explosion. In the following paragraphs I will provide some examples from the movie of Newton’s first law, third law and his law of universal gravitation. Newton’s first law otherwise known as the law of inertia, states that an object at rest will continue to stay at rest and an object in motion will continue to stay in motion unless acted on my an external force. This law is shown throughout the entire movie when the space ship is in outer space. Due to the lack of gravity outside of the Earth’s atmosphere, the space craft moves in uniform motion in the same direction unless acted on by another force such as meteors or the rocket boosters. The third law that Isaac Newton produced states that for every action force there is an equal and opposite reaction force. An example to represent this law can be seen when the astronauts use the rocket engines...
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...CONTENTS |Topic |Page | |Newton's 1st Law: the Law of Inertia |2 | |Newton's 2nd Law: the Law of Proportionality |3 | |Newton's 3rd Law: the Law of Interaction |4-5 | |STUDENT WORKSHEET: Conversion…Force |6 | |STUDENT WORKSHEET: Conversion…Weight |7 | |STUDENT WORKSHEET: Conversion…Length |8 | |STUDENT WORKSHEET: Acceleration |9 | |STUDENT WORKSHEET: Force and Acceleration |10 | |STUDENT WORKSHEET: Force and Acceleration Exercises |11 | |STUDENT WORKSHEET: Fighting Gravity! |12 | National Science Standards: Science as Inquiry Physical Science Position...
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...What is a Projectile? In Unit 1 of the Physics Classroom Tutorial, we learned a variety of means to describe the 1-dimensional motion of objects. In Unit 2 of the Physics Classroom Tutorial, we learned how Newton's laws help to explain the motion (and specifically, the changes in the state of motion) of objects that are either at rest or moving in 1-dimension. Now in this unit we will apply both kinematic principles and Newton's laws of motion to understand and explain the motion of objects moving in two dimensions. The most common example of an object that is moving in two dimensions is a projectile. Thus, Lesson 2 of this unit is devoted to understanding the motion of projectiles. A projectile is an object upon which the only force acting is gravity. There are a variety of examples of projectiles. An object dropped from rest is a projectile (provided that the influence of air resistance is negligible). An object that is thrown vertically upward is also a projectile (provided that the influence of air resistance is negligible). And an object which is thrown upward at an angle to the horizontal is also a projectile (provided that the influence of air resistance is negligible). A projectile is any object that once projected or dropped continues in motion by its own inertia and is influenced only by the downward force of gravity. By definition, a projectile has a single force that acts upon it - the force of gravity. If there were any other force acting upon an object, then...
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...Physics Teacher Guide #11 NEWTON'S THIRD LAW OF MOTION Objective: Students will experiment with LEGO® materials to gain an understanding of Newton's third law of motion. *Vocabulary: SIR ISAAC NEWTON FORCE MOMENTUM NEWTON'S THIRD LAW OF MOTION MASS VELOCITY Create a LEGO® launch pad and projectile using an 8x16 brick, LEGO® bricks, rubber bands, string, and pencils as shown. Use the scissors to snip the string and smoothly launch the projectile brick. Have students observe the amount of recoil by measuring the launch pad's movement in the opposite direction. Stage an informal challenge where students strive to get the most distance out of their recoil. Hint: Increasing the projectile mass, or the velocity of the launch, should increase this distance. Activity 1: Materials: LEGO® bricks, String, Large rubber bands, Scissors, Rulers, Smooth, round pencils to act as rollers. Activity 2: Preparation: Prepare and test your own device prior to having your students do this experiment. Challenge your students to collectively design a larger version of the Conservation of Momentum Machine built in activity 1. Form small groups and encourage them to work together to create this super slider using LEGO® materials and found objects. Discussion: Lead a discussion focusing on key vocabulary terms. Introduce Sir Isaac Newton and his third law of motion: For every action, there is an equal and opposite reaction. This means it is not possible to exert a force...
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...Abstract When reading about Isaac Newton, he is presented as a physicist and mathematician. One whom through his exquisite work formulated, amongst other; the laws of motion, universal gravity, and is considered one of the founders of calculus. Although his work has been widely accepted as major stepping stones in what became known as the scientific revolution, the significance of religion in Isaac’s life can often be overshadowed by his accomplishments. This paper seeks to explore the religious views of Isaac Newton and how these views helped shape him into the legendary scientist he was to become. In order to understand the significance of Isaac Newton the Christian, we must first indulge ourselves in the times that he lived his life. His views tended to steer away from popular belief, which forced him to become very private and elusive about his faith. But, if we are to understand how a mind like Newton’s could change the course of history, we must begin with the man behind the book, and the religious views that drove him. Keywords: Newton, Christianity, Science, Heresy, Principa Isaac Newton and Religion Isaac Newton, the Christian Despite being born into an Angelistic household, Isaac Newton never seemed to be overly fond of attending church or strictly following the Angelic faith. He even went so far as to at a point question the King James Bible on, amongst other things, the “three in heaven”, as he claimed that the older Greek Bibles did not mention such a thing...
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...Newton's First Law of Motion: I. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it. | This we recognize as essentially Galileo's concept of inertia, and this is often termed simply the "Law of Inertia". Newton's Second Law of Motion: II. The relationship between an object's mass m, its acceleration a, and the applied force F is F = ma. Acceleration and force are vectors (as indicated by their symbols being displayed in slant bold font); in this law the direction of the force vector is the same as the direction of the acceleration vector. | This is the most powerful of Newton's three Laws, because it allows quantitative calculations of dynamics: how do velocities change when forces are applied. Notice the fundamental difference between Newton's 2nd Law and the dynamics of Aristotle: according to Newton, a force causes only a change in velocity (an acceleration); it does not maintain the velocity as Aristotle held. This is sometimes summarized by saying that under Newton, F = ma, but under Aristotle F = mv, where v is the velocity. Thus, according to Aristotle there is only a velocity if there is a force, but according to Newton an object with a certain velocity maintains that velocity unless a force acts on it to cause an acceleration (that is, a change in the velocity). As we have noted earlier in conjunction with the discussion of Galileo, Aristotle's view seems to be more in accord with common...
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...“Different causes of car accident in community” the sleepy community it was in the past, and the density of the population has led to many serious traffic problems throughout the city. The numbers of auto accidents continue to rise, and these accidents involve a range of negligent driving behaviours. • People who are sleepy while driving is one of example og car accident there are road conditions that are dangerous even in the dry months, often leading to serious or deadly accidents. In car accident there are 3 main accident reasons behind these auto crashes: speed, impaired driving and distractions. •in weather condition while driving too fast is dangerous. Although heavy rains make it unsafe to travel at normal speeds, some drivers just won’t slow down. •Using cell phone while driving is well known to be dangerous, and texting while driving puts the driver, the passengers and all travellers on the road at great risk of harm. The driver’s eyes are not on the road ahead; instead he or she is mentally focused on reading an incoming text or email, or in composing the text or email. While the attention of the driver is shifted off the road and onto the digital device, the vehicle travels a great distance, and the potential for hitting a car ahead, swerving out of lanes and into oncoming traffic and other dangers is very real. Other driver distractions include daydreaming, talking on the phone. •when they get behind the wheel. A normally friendly individual can have a complete...
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...Newton's First Law of Motion can be stated as: An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Newton’s First Law of Motion is applied to liftoff because: Before firing, the rocket is in state of rest, and its airspeed is zero. When the engine is fired, the thrust increases from zero and the weight decreases slightly as the fuel burns. When the thrust is greater than the weight, the net force from thrust to weight is positively upward. The rocket then accelerates upward and the velocity increases.] _______________________________________________________________1 Newton's Second Law of Motion can be stated as: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. The key point here is that if there is no net force resulting from unbalanced forces acting on an object (if all the external forces cancel each other out), then the object will maintain a constant velocity. If that velocity is zero, then the object remains at rest. And if an additional external force is applied, the velocity will change because of the force. Newton’s second law of motion determines the amount of the change in velocity. _______________________________________________________________2 Newton’s...
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...Phvsics Lab Report Format (Sample Report Attached) General Remarks: Writing a lab report is the only way your TA will know what you have done during the lab and how well you have understood the process and the results. Part of your lab experience should be learning how to organize and present your work in a scientific way. There is no framework that can be used as a "one size fits all", therefore this sample lab report should only be used as an example. Any lab report should have the following features: o It should be concise but should also contain the necessary details and well-developed explanations. It should be organized. You should enable the reader to quickly find the information he or she may be interested in. It should contain all the relevant information and reasoning. You should enable the reader to validate your conclusion. A possible way to achieve this is using the following framework: o o . o o o o . Obiective: State what you want to achieve in this experiment A formal way to do this is to state a question or hypothesis that you want to address. Method: You should include a summary of the lab procedure in your words; do not merely copy what is in the manual. This section should demonstrate your understanding of what exactly you measured and how you measured it. Data: In this section you should include the raw data you measured; generally, an estimate of the error should accompany all measured values. Be sure to present...
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...invention of the infinitesimal calculus and a new theory of light and color, Newton transformed the structure of physical science with his three laws of motion and the law of universal gravitation. As the keystone of the scientific revolution of the 17th century, Newton's work combined the contributions of Copernicus, Kepler, Galileo, Descartes, and others into a new and powerful synthesis. Three centuries later the resulting structure - classical mechanics - continues to be a useful but no less elegant monument to his genius. Life & Character - Isaac Newton was born prematurely on Christmas day 1642 (4 January 1643, New Style) in Woolsthorpe, a hamlet near Grantham in Lincolnshire. The posthumous son of an illiterate yeoman (also named Isaac), the fatherless infant was small enough at birth to fit 'into a quartpot.' When he was barely three years old Newton's mother, Hanna (Ayscough), placed her first born with his grandmother in order to remarry and raise a second family with Barnabas Smith, a wealthy rector from nearby North Witham. Much has been made of Newton's posthumous birth, his prolonged separation from his mother, and his unrivaled hatred of his stepfather. Until Hanna returned to Woolsthorpe in 1653 after the death of her second husband, Newton was denied his mother's attention, a possible clue to his complex character. Newton's childhood was anything but happy, and throughout his life he verged on emotional collapse, occasionally falling into violent and vindictive...
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...Newton's First and Second laws, in Latin, from the original 1687 Principia Mathematica. Newton's laws of motion are three physical laws that form the basis for classical mechanics. They describe the relationship between the forces acting on a body and its motion due to those forces. They have been expressed in several different ways over nearly three centuries, and can be summarized as follows: 1.First law: If an object experiences no net force, then its velocity is constant; the object is either at rest (if its velocity is zero), or it moves in a straight line with constant speed (if its velocity is nonzero). 2.Second law: The acceleration a of a body is parallel and directly proportional to the net force F acting on the body, is in the direction of the net force, and is inversely proportional to the mass m of the body, i.e., F = ma. 3.Third law: When two bodies interact by exerting force on each other, these forces (termed the action and the reaction) are equal in magnitude, but opposite in direction. The three laws of motion were first compiled by Sir Isaac Newton in his work Philosophiæ Naturalis Principia Mathematica, first published in 1687.[5] Newton used them to explain and investigate the motion of many physical objects and systems.[6] For example, in the third volume of the text, Newton showed that these laws of motion, combined with his law of universal gravitation, explained Kepler's laws of planetary motion. Overview Isaac Newton (1643-1727), the physicist...
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...PHYSICS ASSIGNMENT PROPOSAL NEWTON’S FIRST LAW OF MOTION TITLE : NEWTON’S FIRST LAW OF MOTION (LAW OF INERTIA) THEME : DYNAMICS SUBJECT : PHYSICS 1 SUBJECT CODE : FPH 1114 GROUP MEMBERS : 1. REETNAM KAUR 2. AIDA AFIQAH BINTI MOHD RIDZUWAN 3. NUR HANIS BINTI ISKANDAR 4. AMIR SYAHIR BIN MURAD 5. JEYAPRAVIN GANESAN Abstract Sir Isaac Newton first presented his three laws of motion in the "Principia Mathematica Philosophiae Naturalis" in 1686. His first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This is normally taken as the definition of inertia. The key point here is that if there is no net force resulting from unbalanced forces acting on an object (if all the external forces cancel each other out), then the object will maintain a constant velocity. If that velocity is zero, then the object remains at rest. And if an additional external force is applied, the velocity will change because of the force. The amount of the change in velocity is determined by Newton's second law of motion. In this experiment, the simple egg drop trick is used to demonstrate the application of Newton’s First Law of Motion, namely inertia. The large drinking glass is filled about three-quarters with water. A pie pan is placed on top of the glass. The...
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...freely fall when suspended and using clothes during cold seasons are some of the examples of areas where physics is used in everyday activities. Skating Skating is one of my daily activities where physics is applied. Skating is a type of movement that is made possible through the laws of motion found in physics. Skating can help explain the term movement, what makes skaters move and what keeps skaters moving while in motion. Also, it helps explain what it takes to stop moving or turn the process of moving in another direction. Skating can also reveal the concept of acceleration and deceleration, as well as the concept of speed. While putting a skate, nothing will happen to such a person unless an external force acts on him or her. The concept of inertia states that a body in motion will always tend to move while a body at rest will always tend to rest unless an external force acts on it (Laws, Sugano, and Swope, 2002). This is the first thing that happens before a person starts skating. The skater will always remain at rest until he applies some force to start moving. While on motion, the skater will tend to move unless he applies a force to stop. This is also an explanation of Newton’s first law of motion which states that every object or body in a state of uniform movement will tend to remain in...
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