Newton's Second Law Model

After students discover the cause of acceleration through hands-on labs, they are asked to develop a model with which they can reproduce the graphs they have seen during the lab activities.

 THE MODELS
 Vensim Version Vensim PLE Software Right-click to download the model Newton's SecondLaw - Vensim STELLA Version isee Player Software Right-click to download the model Excel Version Right-click to download the model Newton's Laws - Excel

[Diagram Level | Equations Level | Graphs ] ```
Distance(t) = Distance(t - dt) + (Rate_of_Change_of_Distance) * dt
INIT Distance = 0
Rate_of_Change_of_Distance = Velocity
Velocity(t) = Velocity(t - dt) + (Rate_of_Change_of_Velocity) * dt
INIT Velocity = 0
Rate_of_Change_of_Velocity = Acceleration
Acceleration = Net_Force/Mass
Mass = 5
Net_Force = 25
```
##### Time Specs Settings
Standard: Range 0-12; dt = 0.25; Integration Method = Euler's

Graphs

In the first case, students are asked to keep the mass constant and vary the force. The first four graphs illustrate their findings. In the second case, the students are asked to keep the force constant and vary the mass. The next four graphs illustrate the results. The color coding is very important.

Force vs. Acceleration Mass vs. Acceleration Home | Contact | Site Map | Search