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

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