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

Question

1. Drop a 5-gram ball, a 10-gram ball, and a 12-gram ball from a height of 10 meters.
2. Record how long it takes for each object to hit the ground.
3. ?
Which step should be next?

A.) Drop the balls from a different height.

B.) Measure the mass of the balls again.

C.) Choose new balls.

D.) Perform a second trial.

Answer 1

D.) Perform a second trial.