ERIC Number: EJ1295104
Record Type: Journal
Publication Date: 2021-Mar
Pages: 4
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0031-921X
EISSN: N/A
Available Date: N/A
Projectile Motion: The "Coming and Going" Phenomenon
Ribeiro, Williams J. M.; de Sousa, J. Ricardo
Physics Teacher, v59 n3 p168-171 Mar 2021
During elementary physics courses, many examples in mechanics are studied without considering air resistance effects. We can mention, for example, projectile motion and free fall, among many others. Only brief studies of such systems in classical mechanics courses consider linear air resistance (F[subscript drag] [is proportional to] v), which is the simplest model to account for the drag effect by modeling objects moving in viscous media with small velocities (more precisely, small Reynolds number). Quadratic air resistance (F[subscript drag] [is proportional to] v[superscript 2]), which applies for objects moving in resistive media with high velocities (high Reynolds number), is hardly mentioned, but it can be found in many papers. However, in nature air resistance plays a big role in the motion of bodies and so it must be included when studying any kind of phenomena related to mechanics.
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: Elementary Education
Audience: N/A
Language: English
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