A signal flare is fired upward from ground level with an initial speed of 294 m/s. A balloonist at a height of 2450 m sees it pass on the way up. How long will it be before the flare passes the balloonist again on the way down?
I HAVE NO IDEA HOW TO SOLVE :(

Question

A signal flare is fired upward from ground level with an initial speed of 294 m/s. A balloonist at a height of 2450 m sees it pass on the way up. How long will it be before the flare passes the balloonist again on the way down?
I HAVE NO IDEA HOW TO SOLVE :(

anonymous · Answer

solve:
2450 = 294*t -(gt^2)/2
for t

then find the difference between those two times.

anonymous · Answer

(g= 10 or 9.8 or 9.81, depending one what your text book uses)

anonymous · Answer

thanks! i just didnt know how to set up the equation!