Graphical analyzer for misconception of angle 45° as optimal angle of parabolic motion
R D Agustina*, W Setya, A Malik, R P Putra, S Andhika, A N Fitriani, and Y Cesariyanti

Department of Physics Education
UIN Sunan Gunung Djati Bandung
Jl.A.H.Nasution No.105
Cibiru, Bandung 40614, Indonesia

Abstract

Misconceptions still often occur when learning physics, especially in conducting a study that is not consistently detailed in identifying an observation. In the material of parabolic motion, it is known that is the special angle that produces the farthest distance. The misconception that 45 ° is the angle that produces the farthest distance has become a reference in learning in various educational institutions to this day. The aim of this research is to identify and prove that the 45 ° angle is not the elevation angle which results in the farthest distance in a vacuum which ignores the initial position of the thrower. The method used is Data analytics, and compared based on Graphics Analytics using PhET virtual laboratory media. This study will test an elevation angle of 42°, 45°, 48° based on a height of 0 m, 1 m, 2 m. The results of the research will be analyzed based on the functional analyzer approach which is made from equations into function graphs to make it easier for readers to read the data. In this research, it is found that is the farthest distance producer and also gets a travel time that is relatively faster than the angle which we know so far as the special angle that produces the farthest distance in non-vacuum conditions. In this study, it is hoped that the readers will be able to reexamine the earning angle of the furthest distance which is still a misconception in various educational institutions.

Keywords: Misconception- parabolic motion- virtual laboratory,

Topic: Physics