Physics
posted by Isis .
If an object is thrown in an upward direction from the top of a building 160 ft high at an initial speed of 30 mi/h, what is its final speed when it hits the ground?

when does it hit?
30mph = 44ft/s
160+44t16t^2 = 0
find t then plug that into
v(t) = 4432t
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