How can you demonstrate Newton's Second Law.

Grab a trolley, Light gates, string and measured mass. Tie the trolley with string which is also connected to mass located underneath the table. Put Light gates in two measured out spots. The light gates will give you acceleration straight up. Drop the force and let the car go through the light gates. From their see the Force you put on the string and the acceleration. There will be a clear trend. More force = Greater acceleration.