Question

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

Object To Be Dropped Drop Height (meters)
10-gram ball 5
5-gram ball 8
18-gram ball 10
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?

(1 point)
Responses

by using balls that are the same mass
by using balls that are the same mass

by dropping the balls from the same height
by dropping the balls from the same height

by finding balls made from different materials
by finding balls made from different materials

by measuring the circumference of the balls
by measuring the circumference of the balls
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Answer 1

To improve the investigation studying the effect of gravity on objects, the best option would be:

**by dropping the balls from the same height.**

This option ensures that the only variable being tested is the object itself, rather than the height from which it is dropped. If the heights are different, it becomes difficult to isolate the effect of gravity on the different objects because they are dropped from varying distances.