水平抛射运动:比较自由落体和阻力

Q4 Social Sciences

Revista Mexicana De Fisica E Pub Date : 2020-07-01 DOI:10.31349/revmexfise.17.156

R. Yáñez-Valdez, P. A. Gómez Valdez, F. De Armas Rivero

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引用次数: 0

摘要

考虑一个粒子被投射到一个有阻力的介质中并受到均匀重力场的作用时的运动。在介质中作用于粒子的阻力与粒子的速度、介质的密度和抛射物的横截面积成正比。我们回顾了一个水平运动的问题，阻力的速度是线性的。这个问题是用粒子速度、质量、高度、时间和排出气体的速度来表示的。对运动方程进行了解析求解，并给出了一个算例。由此，我们得到了抛射体的偏差随时间的函数，这是由于抛射气体在有或没有阻力的情况下所造成的。

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Horizontal projectile motion: comparing free fall and drag resistance

The motion of a particle that is projected into a resistant medium and subjected to a uniform gravitational field is considered. The drag force that acts upon the particle within the medium is proportional to the particle’s speed, the density of the medium, and the cross-section area of the projectile. We review the problem of a horizontal motion with a drag force that is linear in speed. The problem is formulated in terms of particle speed, mass, height, time, and expelled gas velocity. The equations of motion are solved analytically, and a case study is discussed. As a result, we obtain the deviation of the projectile as a function of time because of the expelled gases with or without drag force.

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来源期刊

Revista Mexicana De Fisica E 社会科学-科学史与科学哲学

CiteScore

0.80

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Revista Mexicana de Física (Rev. Mex. Fis.) publishes original papers of interest to our readers from the physical science com unity. Language may be English or Spanish, however, given the nature of our readers, English is recommended. Articles are classified as follows: Research. Articles reporting original results in physical science. Instrumentation. Articles reporting original contributions on design and construction of scientific instruments. They should present new instruments and techniques oriented to physical science problems solutions. They must also report measurements performed with the described instrument. Reviews. Critical surveys of specific physical science topics in which recent published information is analyzed and discussed. They should be accessible to physics graduate students and non specialists, and provide valuable bibliography to the specialist. Comments. Short papers (four pages maximum) that assess critically papers by others authors previously published in the Revista Mexicana de Física. A comment should state clearly to which paper it refers.