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

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 measuring the circumference of the balls
by measuring the circumference of the balls

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

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

Answer 1

To improve the investigation, the best option is:

by dropping the balls from the same height

This approach allows the student to isolate the effect of gravity on the balls without the variable of drop height affecting the results. If the balls are dropped from different heights, it may introduce inconsistencies in how gravity's effects are measured, making it difficult to draw clear conclusions.