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

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

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

by finding balls made from different materials