Newton's lab results

On Friday, I overcame my fears of car crashes, ticker tape, and pulleys, and tested out Newton's laws.
We had a cart, ticker tape, 100g weights, and were asked to test out various scenerios with regards to force and mass, hence acceleration.

This is a googled example of what we did in class (same concept really).

I have to double check the results, i'm not entirely sold on mine...