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Although this website is dedicated to explaining mathematics, many of you ask me to help you solve physics exercises. The most repeated exercise that you have asked me to do is the uniform rectilinear movement , so I will dedicate this post to explain in detail, step by step, how to solve this type of exercise.

I will focus on your understanding the procedure to learn how to solve the exercises. To understand this type of exercise you have to be clear about what uniform rectilinear motion is. As its name suggests, we speak of uniform straight-line motion when a body, be it a vehicle, an object, an animal, whatever it is, moves in a straight line at a constant speed :. It is important to keep this in mind, because if any of these premises are not met, the formulas of the uniform rectilinear motion would no longer be valid.

We must always work in the same units. We are not obliged to work with the units of the international system, but we do so in order to establish a criteria. You also have to be very careful when mixing units in the statement, for example, give you the data in hours but the result you ask in seconds.

We are going to solve step by step one of the examples of the most typical exercises of uniform rectilinear motion:. Two trains depart from two cities, km apart in a straight line.

First of all, you must make an outline of the data that the statement gives you and have very clear what they are asking you. Forget about formulas for the moment:. We draw two points A and B separated km, are their corresponding speeds, each with its sense and place more or less where we think they will be, the point x. Now it is necessary to establish the initial conditions for each train, that is, its initial position, its initial time and the direction of the speed, from our reference system, and according to the signs of the coordinate axes:.

Train B leaves one hour later, then we start counting when train A leaves. That is to say, the initial time of train A will be 0 and therefore for train B, the time will have already advanced 1 hour when it leaves:. If the statement says that train B leaves 2 hours earlier, then:. Now we only have to apply the formula for each train. As it is a meeting point, x is the same in the two equations, so we equal them to clear t, which will also be the same:.

With this value of t, we substitute it in either of the two equations. Remember that x is a position, that is, a point. The space traveled is equal to the final position, minus the initial position:. Name required. Email will not be published required. This site uses Akismet to reduce spam. Learn how your comment data is processed. Special products: Step by step tutorial. Resolved examples. How to calculate the line equation. Slope of a line. Leave a Reply Click here to cancel reply.

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## Line Chart

Although this website is dedicated to explaining mathematics, many of you ask me to help you solve physics exercises. The most repeated exercise that you have asked me to do is the uniform rectilinear movement , so I will dedicate this post to explain in detail, step by step, how to solve this type of exercise. I will focus on your understanding the procedure to learn how to solve the exercises. To understand this type of exercise you have to be clear about what uniform rectilinear motion is. As its name suggests, we speak of uniform straight-line motion when a body, be it a vehicle, an object, an animal, whatever it is, moves in a straight line at a constant speed :.

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## Uniform Rectilinear Motion: Solving Problems Step by Step

Line Chart. Systems Of Equations. Math art projects will get kids creative while also teaching them mathematical concepts. Fun ideas for children of all ages and skill levels. Find this Pin and more on teaching and learning by Katrina Webb. Math Projects. Projects For Kids.