Object To Be Dropped
Drop Height (meters)
10-gram ball
5-gram ball
18-gram ball
5
8
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)
• by dropping the balls from the same height
O by using balls that are the same mass
• by finding balls made from different materials
• by measuring the circumference of the balls