Laboratory Problem in Projectile Motion

1961 ◽  
Vol 29 (8) ◽  
pp. 547-548
Author(s):  
Allen L. King
Keyword(s):  
1983 ◽  
Author(s):  
Martin T. Soifer ◽  
Robert S. Becker
Keyword(s):  

Author(s):  
Rayendra Wahyu Bachtiar ◽  
Ralph F. G. Meulenbroeks ◽  
Wouter R. van Joolingen

AbstractThis article reports on a case study that aims to help students develop mechanistic reasoning through constructing a model based stop-motion animation of a physical phenomenon. Mechanistic reasoning is a valuable thinking strategy for students in trying to make sense of scientific phenomena. Ten ninth-grade students used stop-motion software to create an animation of projectile motion. Retrospective think-aloud interviews were conducted to investigate how the construction of a stop-motion animation induced the students’ mechanistic reasoning. Mechanistic reasoning did occur while the students engaged in creating the animation, in particular chunking and sequencing. Moreover, all students eventually exhibited mechanistic reasoning including abstract concepts, e.g., not directly observable agents. Students who reached the highest level of mechanistic reasoning, i.e., chaining, demonstrated deeper conceptual understanding of content.


2004 ◽  
Vol 35 (5) ◽  
pp. 337-350 ◽  
Author(s):  
Edward W. Packel ◽  
David S. Yuen

2000 ◽  
Vol 38 (7) ◽  
pp. 423-423 ◽  
Author(s):  
Hui Hu ◽  
Jinyun Yu
Keyword(s):  

2004 ◽  
Vol 26 (2) ◽  
pp. 125-127 ◽  
Author(s):  
E.N. Miranda ◽  
S. Nikolskaya ◽  
R. Riba

The motion of a projectile with horizontal initial velocity V0, moving under the action of the gravitational field and a drag force is studied analytically. As it is well known, the projectile reaches a terminal velocity Vterm. There is a curious result concerning the minimum speed Vmin; it turns out that the minimum velocity is lower than the terminal one if V0 > Vterm and is lower than the initial one if V0 < Vterm. These results show that the velocity is not a monotonous function. If the initial speed is not horizontal, there is an angle range where the velocity shows the same behavior mentioned previously. Out of that range, the velocity is a monotonous function. These results comes out from numerical simulations.


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