Abaseball is seen to pass upward by a window 19 m high with a speed of 23 m/s. how long ago was the baseball thrown?

Gravity is a uniform accleration.  So I found the answer by using two of the formulas for uniform acceleration:

The first lets us find the initial velocity and the second lets us use that to get the time.  The first is:

Now using equation 2:

and solving this for t:

as technology advances, new experiments often expose problems in accepted theories. c

hope i

-lavira: )

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)