Answer:
If two objects are dropped at the same height, the heavier object will hit the ground first.
Step-by-step explanation:
A proper hypothesis has the form:
"If ... , then ... ".
Now, why the other sentence aren't hypothesis?
- Orange popsicles taste sweeter than grape popsicles.
This sentence its an OPINION. It may be true that, for the speaker/writer, orange popsicles taste sweeter, but this is an subjective opinion, and difficult to test.
- Children who wear backpacks do better academically.
This sentence its an STATEMENT. If we wish to make an proper hypothesis, it should take the form:
If children wear backpacks, then they do better academically.
- I think there is no effect on hearing if you listen to loud music only three hours a day.
This sentence its another OPINION. This opinion COULD be tested, but the proper way of write it as an hypothesis would be:
If someone listed to loud music only three hours a day, then there shoul be no effect on his/her hearing.