There must be more information for this question. Presumably you cannot go up 13 stairs in one go, but can you do 2? or 3 or even 4? What is the limit? And do you keep going up or is there a risk of slipping back?
It depends how fast you walk. I find I can walk a flat mile in about 15 minutes, so I walk at roughly 4 miles per hour. It would take me roughly 2 hours 15 minutes to walk 9 miles, assuming I can maintain that speed. If there are hills involved, the time will different.
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It depends on how fast you walk.
520
cause when you walk up it is easy and it is hard to walk down cause you can fall
A cow can climb up stairs but not down.
A slinky (of the correct size) can walk down the stairs.
Cows and bulls can both walk down stairs, as long as the stairs are wide and long enough. Some dairy sheds have stairs for the cows to walk down if the shed is on slanted ground.
No it can not
with a woody
no
You aim your character at the stairs and walk forward.
Stairs is a noun. "Sharon had to walk (verb) up thirty seven flights of stairs (noun)."
that depends. is your mom blocking the stairs? lol idk u should try that out and find out =]
yes
the right