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Newton's 3 Laws of Motion

Erin Jordan
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Erin Jordan

on 18 October 2012

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Transcript of Newton's 3 Laws of Motion

Application of Newton's Laws of Motion Big Thunder Mountain Newton's First Law of Motion Newton's Third Law of Motion Summary Newton's Second Law of Motion The Second Law of Motion explains that if a force is placed on an object, it will accelerate in the direction of the force. It states that acceleration is directly proportional to the force and is inversely proportional to the mass of the object. It also states that the net force applied to an object is the same as the mass of the object multiplied by its acceleration. The Third Law of Motion states that for every force, there is an equal and opposite force. Equal and opposite forces are present when two objects collide. If one force started out small, build, and then reduced, than the opposite force would also start out small, build, and then reduced. The overall theme of the roller coaster, Big Thunder Mountain, is a train ride through an old western mining setting. The journey includes traveling through an abandoned mine and several different rock formations. The train tours through a combination of inside the ride the as well as outside on train tracks. Located at several Disney locations, this short attraction is very popular. The coaster itself does not include loops, but is still moderately fast, incorporating large curves and several rigid slopes that are meant to represent traveling the mountains of the west. Each "train car" holds four passengers, and one "engine" is at the front of the roller coaster. Overall, the entire train holds 35-40 passengers. The objective of the roller coaster is to return to the mining station, where the ride concludes. The First Law of Motion discusses changes in velocity due to non-zero net forces, stating that if no outside force is applied to an object, it's velocity will remain the same. It also states that if an object is motionless and no outside force is applied, it will continue to remain motionless. If a net force is applied to an object, it will show a change in velocity. The First Law is also known as the Law of Inertia. Newton's First Law applies to several aspects of the roller coaster, such as when the train is at a complete stop at the beginning/end of the ride. At this time, the coaster has balanced forces, and since no unbalanced force is acting upon it, the coaster does not move. When the train moves the wheels on the track, it is an unbalanced force acting upon the coaster, and it changes its velocity, causing it to move in the direction of the force, forward. Also, when the train climbs uphill, the friction between the train and the track is increased so that it does not fall backwards. Friction is another unbalanced force that changes the velocity of the coaster, causing it to slow. The velocity increases as the train changes direction and travels downward. This is due to gravity acting upon the coaster, and increasing it's velocity. Newton's Second Law applies to several aspects of the roller coaster as well. It accelerates in the direction of which the wheels have been acted on by an unbalanced force. When going downward, the unbalanced force of gravity also causes the coaster to accelerate downward. The law also states that you would need a greater force if more mass was added to the train. Newton's Third Law applies to several aspects of the roller coaster as well. There is the action force of the coaster's brakes being applied, and the result is the reaction force of an increase in the amount of friction. When a force stops acting on an object, such as the train stops propelling the wheels forward, then the amount of friction will increase because it is equal and opposite to the amount of force you apply to an object. The friction becomes greater as the forces stops being applied, until it causes the train to slow down and stop. This is when the forces acting upon the coaster are balanced. Also, the action force of the roller coaster changing direction due to the shape of the track it is on, has a reaction force of the passengers are moved in the same direction of the turn. The turn is sudden, and it causes your body to lean in the same direction, before you sit upright again. (This action/reaction is displayed in the video.) http://www.bbc.co.uk/schools/ks3bitesize/science/energy_electricity_forces/forces/revise5.shtml http://www.calctool.org/CALC/phys/newtonian/fma http://www.educationalelectronicsusa.com/p/newton_laws-iii.htm http://www.themeparkreview.com/parks/photo.php?pageid=235&linkid=2462
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