Drag Activity

 In this activity, students will investigate Newton's Second Law of Motion with falling filters and parachute experiments and models.

 TEACHER RESOURCES Teacher Materials Student Activity Student Assessment Learning   Goals/Standards COMPUTER MODELSTELLA Version isee Player Software Right-click to download the model Web-based Simulation COMPUTER MODELVensim Version Vensim PLE Software Right-click to download the model Drag ModelVensim

 THE MODEL DIAGRAM THE EQUATIONS Displacement(t) = Displacement(t - dt) + (Rate_of_Change_of_Displacement) * dt INIT Displacement = 1.5 {m} Rate_of_Change_of_Displacement = Velocity Velocity(t) = Velocity(t - dt) + (Rate_of_Change_of_Velocity) * dt INIT Velocity = 0 {m/s} Rate_of_Change_of_Velocity = Acceleration Acceleration = Net_Force/Mass acceleration_due_to_gravity = -9.8 {m/s^2} air_density = 1.16 {kg/m^3} Applied_force = weight cross_sect_area = 0.0133 {m^2} drag = 0.5*drag_coefficient*air_density*cross_sect_area*Velocity^2 drag_coefficient = 1 Mass = 0.00105 {kg} Net_Force = Applied_force+Opposing_Force Opposing_Force = drag weight = Mass*acceleration_due_to_gravity

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