Investigating the collision of objects in liquids using tracker program for teaching in upper secondary school level

Abstract

The investigation of the collision of objects in liquids using tracker program for teaching in upper secondary school level is intended to study the movement patterns and movement conditions of objects in liquids at each subsequent period with the tracer program, refer to 2D Cartesian coordinate system, and to find out the effectiveness of the lesson plans and compare the average of the pre-test and post-test scores of the subjects who which using the video tracker program. It teaches physics of collisions of objects in the liquids using the video tracker program. The experimental fluids were water, syrup, and palm oil, which had a viscosity of 20 degrees Celsius, N/A, 2453.37, and 84.53 mPa-s, respectively. The material used as round metal has a radius of 3.17 x10^-3 m and 1.04 x 10^-3 kg of mass. The results found that the speed and acceleration of those objects before and after the collision were direct variations to the fluid's viscosity, according to the conservation law of momentum and the conservation law of energy. The results of the educational efficiency of lesson plans of the course on momentum and collision was 85.67/81.98 and which corresponded to the 80/80 standard criteria. The student achievement of the course on momentum and collision score of the pre-test were significantly higher than the post-test which was at the level of 0.05