You have a very heavy steel ball and a very light plastic
ball. If both are dropped from the same height at the
same time, and there is no air resistance, then both
objects will hit the ground at the same time.
True
False

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are