Deeper Inspection Once you've done these twelve measurements, find a specific configuration you found es- pecially fun, intriguing, or easy to take data with. Keep three of the starting variables constant (out of cart 1 mass, cart 2 mass, cart 1 initial velocity, cart 2 initial velocity) and vary the other one for four more data points (making 5 or more data points for the three held variables). This is the part most students don't do and they lost a lot of points so do do this