Question

the table of criteria for an investigation to answer the question.

A student designs an investigation to study the effect of gravity on objects on Earth. He will use the criteria shown. How can the student improve the investigation?
by finding balls made from different materials
by using balls that are the same mass
by dropping the balls from the same height
by measuring the circumference of the balls
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Answer 1

[AI-generated answer — Bot GPT 3.5]

By measuring the diameter of the balls and calculating their volume to account for differences in density. This would ensure that the only variable being tested is the effect of gravity on objects of different materials, rather than the size or mass of the balls.