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Cross, Rod – Physics Teacher, 2022
The trajectory of a ball in air is affected by aerodynamic drag and lift. In general, the trajectory needs to be calculated numerically since the acceleration varies with time in both the horizontal and vertical directions. If the trajectory remains approximately parabolic, then simple analytical solutions can be found, giving useful insights into…
Descriptors: Science Instruction, Scientific Concepts, Physics, Computation
Rex Taibu; Lloyd M. Mataka – Electronic Journal for Research in Science & Mathematics Education, 2025
To explain experiences of riders of rotating systems, such as a merry-go-round, some physics educators have employed the concept of 'centrifugal force.' However, others have suggested that the term is unnecessary in explaining experiences in rotating systems and that it encourages misconceptions surrounding circular motion dynamics. Owing to this…
Descriptors: Textbooks, Motion, Physics, Scientific Concepts
Secrest, Jeffery A.; Jarra, Ibrahim – Physics Education, 2022
The problem of an electrically charged pendulum above a grounded conducting surface is examined using traditional analyses, such as forces, energy, and torque. The system was numerically modelled using a finite difference method and analysed. A number of classroom activities have been suggested.
Descriptors: Science Instruction, Physics, Energy, Mechanics (Physics)
Cross, Rod – Physics Education, 2022
A loop-the-loop experiment usually involves a ball rolling around a vertical loop. A different version of the experiment is described where a nut was allowed to slide around a vertical loop. In both experiments there is a large decrease in kinetic energy when the ball or the nut first enters the loop.
Descriptors: Science Instruction, Science Experiments, Physics, Scientific Concepts
Cross, Rod – Physics Education, 2022
Experimental results are presented concerning the motion of a ball that bounces up an incline a few times then bounces back down again. The number of bounces up the incline is typically small since the speed of the ball in a direction parallel to the incline decreases rapidly, not only during each bounce but also while the ball is in the air. The…
Descriptors: Science Instruction, Physics, Motion, Scientific Concepts
Elaine Christman; Paul Miller; John Stewart – Physical Review Physics Education Research, 2024
This study proposes methods of reporting results of physics conceptual evaluations that more fully characterize the range of outcomes experienced by students with differing levels of prior preparation, allowing for more meaningful comparison of the outcomes of educational interventions within and across institutions. Factors leading to variation…
Descriptors: Physics, Science Instruction, College Entrance Examinations, Calculus
Peter Cumber – International Journal of Mathematical Education in Science and Technology, 2024
A Slinky is a loose helical coil spring and is a well-known educational toy. In this paper a model for a Slinky is presented. The Slinky is represented as a sequence of rigid half coils connected by torsional springs. A range of Slinky configurations in static equilibrium are calculated. Where possible the torsion spring model is compared with the…
Descriptors: Toys, Mechanics (Physics), Motion, Scientific Concepts
Hinrichsen, Peter F. – Physics Teacher, 2022
Modern MEMs gyros/accelerometers allow the angular velocity of pendula to be precisely measured and the angular acceleration to be calculated. For a compound pendulum, "I"[subscript p][umlaut over theta]=-"mga" sin[theta]Ip[umlaut over theta]=-mgasin[theta], where "a" is the distance of the center of mass from the…
Descriptors: Motion, Scientific Concepts, Physics, Measurement
Shen Yong Ho; R. Subramaniam – Research in Science & Technological Education, 2024
Background: Recognizing the relatively few studies that have explored university students' understanding and alternative conceptions in linear and circular motion as well as the relatively few studies that have used 2-dimensional multiple-choice questions (MCQs) in the science education literature, this study set out to contribute to these areas.…
Descriptors: Undergraduate Students, Motion, Scientific Concepts, Concept Formation
Mohd Zaidi Amiruddin; Achmad Samsudin; Andi Suhandi; Bayram Costu – Journal of Education and Learning (EduLearn), 2025
Difficulties in understanding physics concepts are often experienced by students such as in the material of regular uniform motion. This study aims to describe the mental models of first-year secondary school students on regular straight-line motion. This research utilized a case study method of 167 students at the secondary level with an average…
Descriptors: High School Students, Physics, Scientific Concepts, Schemata (Cognition)
Hitier, Mathilde; González-Martín, Alejandro S. – International Journal of Research in Undergraduate Mathematics Education, 2022
Of the many disciplines that rely on calculus, physics is among those with the strongest connections to this branch of mathematics. For instance, the derivative--one of the key notions of calculus--is used to describe velocity and acceleration, which play a central role in mechanics. In post-secondary education, in particular at the college level,…
Descriptors: Calculus, Physics, Motion, Scientific Concepts
Cross, Rod – Physics Education, 2020
Two balls on an incline can remain at rest if friction between the balls prevents them rolling down the incline. Results with various balls are presented to show how ball mass, diameter and friction affects the outcome. A stack of four identical balls is also examined.
Descriptors: Physics, Motion, Scientific Concepts, Mechanics (Physics)
Greenstein, George – Physics Teacher, 2022
We describe a simple, intuitively appealing interpretation of the observed ellipsoidal shape of the rotating Earth: it is that surface everywhere perpendicular to the net force upon it.
Descriptors: Science Instruction, Scientific Concepts, Physics, Motion
Lin, Zhiqi; Xie, Yuchan; Tu, Chaoshi – Physics Teacher, 2023
Acceleration of moving objects is usually measured by photoelectric gates. In this paper, a method of acceleration measurement is proposed by pasting white card stock and black tape on a pulley and then using an Arduino to time the motion. This method only needs one photoelectric sensor to measure the acceleration. In contrast, using photoelectric…
Descriptors: Science Instruction, Physics, Scientific Concepts, Measurement Techniques
Fletcher, Kurtis A.; Lallier, Nicole M.; Masman, Jack M. – Physics Teacher, 2023
Inspired by a commercially produced scattering experiment that was popular beginning in the 1960s, we have developed a Nerf-projectile-based educational activity to demonstrate the basics of particle scattering experiments.
Descriptors: Science Experiments, Science Instruction, Physics, Motion