Students want to design an experiment to study gravity. They decide

Question

they will drop four objects with the same mass from the top of their
school’s bleachers. They will time how long each object takes to reach
the ground. How can they improve confidence in the experiment’s
results? (1 point)
Let a different student time the drop of each object.
Drop each object 10 times and use the average of each object’s fall
times.
Randomly select the order in which the objects are dropped.
Drop all four objects at once.

Answer 1

Drop each object 10 times and use the average of each object’s fall times.