Define Newton’s 1st, 2nd and 3rd Laws. How do these relate to an exercise? Give at least 3 examples.?
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1st - An object in motion/rest will stay in/at motion/rest unless acted upon by another force.\n\nExamples - a ball will keep rolling until its friction with the ground stops it. A rock will stay put unless someone transfers energy to it to move it.\n\n2nd - Force = Mass x Acceleration\n\nExamples - Some car has 5000 kg mass and 10 m/s^2 acceleration. Find its force.\nForce = 5000 x 10\nForce = 50,000 newtons\n\nSome truck has 250,000 newtons of force, and an acceleration of 5 m/s^2. Find its mass.\n250,000 = Mass x 5\nMass = 250,000/5 = 50,000 kg   \n\n3rd - For every action, there is an equal and opposite reaction. \n\nExample - you bounce a ball on the ground. The ball hits the ground, and compresses inward. The ground pushes back up on the ball causing it to land in your hands. You hit a volleyball in PE. The ball pushes against your hands and goes over the net.
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F = ma    \nNewton's second law.
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Newton's second law is \nforce = mass x acceleration\n\nHow about this? Two men were walking on a hill when they see a bar of chocolate at the bottom. Both are eager to get it. The first man, a skinny little guy of 120 lbs, trips and begins rolling down the hill. The second man, a fatty of 250 lbs, trips at the same time and begins rolling down the hill. Because the fat man has more mass, he is able to produce more force to accelerate himself down the hill faster than the skinny man. The happy fat man reaches the bottom of the hill first, and eats the chocolate.\n\nIllustrations shouldn't be too hard.
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They don't call it a Law for nothing you know.\nWherever you look, you will always see an action-reaction paired up.  Newton's 3rd Law fits nicely in with another law which we know holds true in all cases...the Law of conservation of momentum.
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according to newton's second law, F=ma\nso, initially, let the force be F1, mass be m1 and the acceleration be a1\nthe final force is F2, mass is m2 and the accleration is a2\nF1=m1a1 and F2=m2a2\nas the force is decreased by a factor of 3.7, F2=F1/3.7\nand since the mass is decreased by a factor of 2.6, m2=m1/2.6\nF1/F2=m1a1/m2a2\nso, 3.7=2.6*a1/a2\nbut a1=8m/s^2\nso, a2=2.6*8/3.7\nso, a2=5.62m/s^2\nthis is the new acceleration
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F = ma\n\nF - Force\nm - mass\na - acceleration
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Newtons 3 laws of motion say:\n1) 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.\n2)F=MA or force = mass times acceleration. It describes how an unbalanced force acts in the first law. THIS IS THE MOST IMPORTANT DISCOVERY IN ALL THE HISTORY OF SCIENCE!!!!!\n3) For every action, there is an equal and opposite reaction.\n\nNewton also discovered that gravity is a force of attraction between two masses that is equal to the product of the two masses times the gravitational constant divided by the square of the distance between them. Or F=GMm/R^2.\n\nThe combination of all of the above explains all orbits, rocket propulsion, life the universe and everything!\n\n\nThen Einstein comes along and messes it all up. He says that there is a small error in Newton's laws that depends on the speed. For stuff going really fast, Newtons laws are just totally wrong. Gravity isn't even a force at all, it is a curvature in space time.\n\nBut for every day applications, like designing a 747 or computing the path of an artillery shell or a zillion other things, Newtons laws are still used as is because the errors are vanishingly small under normal conditions.
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The answer is C. Although B seems to be a possible answer at first, there could still be an n-number of forces acting on the object such that the sum of all the force vectors is zero, thus making C the more complete answer. One of Newton's laws says that F=m*a (force on an object equals its mass times its acceleration), or a force of 1 Newton on a 1kg object will make it accelerate at a rate of 1m/s^2 in the same direction of the force.
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Dr. Isaac Newton proposed the 3 Laws of Motion, as below:\n\nFirst law:\nObjects in motion tend to stay in motion, and objects at rest tend to stay at rest unless an outside force acts upon them.\n\nOr simply, a force is required to move a stationary object or to stop a moving object.  \n\nSecond law:\nThe rate of change of the momentum of a body is directly proportional to the net force acting on it, and the direction of the change in momentum takes place in the direction of the net force.\n\nOr simply, a body moves along the direction of application of the force.\n\nThird law:\nTo every action (force applied) there is an equal and opposite reaction (equal force applied in the opposite direction).\n\nOr simply, there is always a reaction for any action. Egs: Due to Friction (reaction) only, we are able to walk (action).; Rocket shoots up (action) due to the reaction of the hot gases that expend through the nozzle downwards.
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Newton's laws of motion.\nConservation of engery.\nConservation of momentum.
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C'mon, kid.  Go and read your book and do your homework.  I can understand if you are having problems with one problem, but you are posting this so that others will do your learning for you.  This is simple Newtonian physics.  Three laws you have to work with.  Basic, basic concepts.  If you can't handle this, then might as well give up your dreams of becoming a rocket scientist where you have to deal with special relativities and zero-gravity physics.  \n\nNow get moving!
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Newton's Laws of motion.Everything continues in its state of rest or motion unless acted upon by an external unbalanced force.
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I am sure someone cleverer will come along and shoot holes in this but I think this has a lot to do with Newton's 3 Laws (Newton being a clever dead bloke).\n\nForce: When you kick your sister in the shin you are using force\nMass: If she is fat, she has lots of mass\nInertia: Being fat, she will not be able to chase you. She has inertia. \n( Example from - http://www.allworldknowledge.com/newton/index.html)\n\nSo you are on the train and you are moving - its worth remembering that gravity (the force which keeps you on the floor) only goes downward not along. You on the train are moving along and the 'force' of the train going along, keeps you going along. Get it?\n\nWell you're still going along, watching the world go by, and then you jump.\n\nBy jumping you're still going along with the direction of the train thats one force. But when you start coming down it's the gravity pulling you back, as another force. The train moving you along hasn't changed, you just have two forces one pulling you down (the jump) and one pulling you along (the train).\n\nSo you end up in exactly the same place. With a few miserable commuters.
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This may actually have to do with Newtons laws of physics. This one would seem to be "Every action has an equal and opposite reaction"
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begin our explanation of how Newton changed our understanding of the Universe by enumerating his Three Laws of Motion. \n\nNewton's First Law of Motion:\nI. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.  \n\nThis we recognize as essentially Galileo's concept of inertia, and this is often termed simply the "Law of Inertia". \n\nNewton's Second Law of Motion:\nII. 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.  \n\nThis 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. \n\nThis 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 sense, but that is because of a failure to appreciate the role played by frictional forces. Once account is taken of all forces acting in a given situation it is the dynamics of Galileo and Newton, not of Aristotle, that are found to be in accord with the observations. \n\nNewton's Third Law of Motion:\nIII. For every action there is an equal and opposite reaction.  \n\nThis law is exemplified by what happens if we step off a boat onto the bank of a lake: as we move in the direction of the shore, the boat tends to move in the opposite direction (leaving us facedown in the water, if we aren't careful!).
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Newton's second law:\nFirstly, this law states that if you do place a force on an object, it will accelerate, i.e., change its velocity, and it will change its velocity in the direction of the force.\nSecondly, this acceleration is directly proportional to the force. For example, if you are pushing on an object, causing it to accelerate, and then you push, say, three times harder, the acceleration will be three times greater.\nThirdly, this acceleration is inversely proportional to the mass of the object. For example, if you are pushing equally on two objects, and one of the objects has five times more mass than the other, it will accelerate at one fifth the acceleration of the other.
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The second law of motion states that Force = mass * acceleration, or in other words, that force is directly proportional to acceleration.\n\nThe first law follows because it states that an object at rest or in uniform motion will stay that way unless a force acts upon it. Being at rest or in uniform motion means acceleration is zero. Anything times zero is zero, so no acceleration means no force, and vice-versa.