Students in Dr. Branch's physics class were calculating the average time required for an assortment of objects to fall from the
top of the bleachers to the ground. Every now and then, they would record a time that varied greatly from the rest of the data. 2 ALL BUT one factor could be a source of unavoidable error to account for the differences. That is A.strong air currents. B.miscalibrated stop watch. C.stop watch screen malfunction. D.not dropping exactly on the word "go."
