Figure 5. Tracker Dynamics Model Builder interface showing mass m = 0.2 kg and force model fx = if (t<0.2,3.2*m,-0.246*m)

From

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

Loo Kang Wee, Tze Kwang Leong

American Journal of Educational Research. 2015, 3(2), 197-207 doi:10.12691/education-3-2-13