Figure 13. Model A is a constant accelerating model (blue) that does not match the real motion of the balloon propeled car A. Model B is a data analysis evidence based model of dynamic force in the x direction fx = (-1.853E-1*t^2+2.551E-1*t+3.494E-1)*m where mass of Car A is found by the students to be m = 0.125 kg. Notice how Model A does not fit the real motion whereas the Model B is clearly a better model to describe the real motion of car A

From

Video Analysis and Modeling Performance Task to Promote Becoming Like Scientists in Classrooms

Loo Kang Wee, Tze Kwang Leong

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