In this experiment we determined the acceleration along a horizontal frictionless air track of a glider that has attached to it is a rope with a hook. In this lab we learned the relationship that occurs when the mass of an object is increased while the net force is left constant. Every time more mass is added onto the object and it is pulled with the net force, the acceleration decreases because of the increased mass. The relationship between the acceleration and mass is proportional. It shows that the acceleration is directly proportional to the mass. The relationship we can see through this experiment showed that as the mass of the object became greater, while the net force stayed the same, the acceleration became less.