A ball is dropped from the top of a 349-foot
building.
How many seconds will it take to hit the
ground if the height is given by
h = −16t2+ s,
where s is the initial height?
Answer in units of sec

Question

A ball is dropped from the top of a 349-foot
building.
How many seconds will it take to hit the
ground if the height is given by
h = −16t2+ s,
where s is the initial height?
Answer in units of sec

jlastino · Answer

Just input 349 as h then solve for s

jlastino · Answer

oh wait aren't the variable's switched??

anonymous · Answer

I don't know i dont understand this?? problem

lgbasallote · Answer

you're looking for t so isolate it...

h - s = -16t^2
t^2 = $\large \frac{(h-s)}{-16}$

t = $\large \sqrt{\frac{(h-s)}{16}}$

input your values...

hint: h = 349 ft
s = 0 ft

anonymous · Answer

what is the height of the ball on the ground?  [BIG hint]

lgbasallote · Answer

wait....the denom in the last line should be negative...asd in the hint s = 349 h = 0 sorry

anonymous · Answer

thanks i got it know :) God bless