Answer:
The rock is a bullet
Step-by-step explanation:
**Remember that there is no right or wrong answer for this. As long as what you write is a metaphor.
See my answer on your other post.
I am going to add something else here as well.
The first step to writing a metaphor is knowing what you want to describe the thing as. For the rock I chose strong.
Next think of things that are strong. You can look it up or if you can think of one youself that is even better. Strong: bullet (flies fast?)
Now you put together your metaphor.
It is easier to think of things if you add context to the sentance:
"The rock was a bullet in the air as it flew from her hand towards my face."
Questions I ask when writing a metaphor:
"What is the thing doing?"
"What emotions do I want to convey?"
Once you have practice with writing metaphors it will become second nature. This is why, although it's annoying, teachers make you do repetitive tasks like making you write a whole bunch of metaphors.
Again, hope this helps!