Question

A student wants to know if the effect of gravity is the same on all objects. She follows these steps:

Drop a 5-gram ball, a 10-gram ball, and a 12-gram ball from a height of 10 meters.
Record how long it takes for each object to hit the ground.
?
Which step should be next?

(1 point)

Drop the balls from a different height.

Perform a second trial.

Measure the mass of the balls again.

Choose new balls.

Answer 1

Perform a second trial.

Reason: repeating the drops gives more reliable results (you can average times and check for experimental error), which helps determine whether observed differences are real or due to random variation.