*Why does v0=0?*
While riding on an elevator descending with a constant speed of 3.5 m/s, you accidentally drop a book from under your arm.
(a) How long does it take for the book to reach the elevator floor, 1.1 m below your arm?

Question

anonymous · Answer

i use $$\Delta x = v _{0}t +1/2 at ^{2}$$

anonymous · Answer

i think...

anonymous · Answer

book is dropped to $v_0=0$

anonymous · Answer

really?
isn't initial = speed of elevator?

anonymous · Answer

well i know next to no physics, but i can't imagine that makes any difference

anonymous · Answer

well ill that first

anonymous · Answer

thats right!

anonymous · Answer

thank you but now i am seriously confused lol