Science 8 teachers Ms. Gray & Dr. Holloway took their classes on Wed (9/19/18) to the gym to test/observe the dropping of 3 different kinds of balls off the mezzanine to the gym floor. Styrofoam (largest ball), tennis (yellow), and lacrosse (white) balls were compared.
Students observed and came up with reasons they thought the balls dropped like they did: different masses, sizes, and surface texture; air resistance; uplift from HVAC-induced air currents; and student dropping errors. This is one of many labs/activities the classes are doing to show them that, when you discount for other forces acting on objects, objects will fall at the same rate no matter their mass . . . because the acceleration of all objects due to gravity on Earth is 9.81 m/s².