A marble is flicked straight up. It takes 2.3 seconds to reach its maximum height. How long does it take it to return to its original height. Assume there is no air resistance

Question

totally lost.
if i had velocity, or some other variable i would know what to do. all i know is travel time and gravity

Answer 1

also, i have gotten this far, assuming that my teacher wants us to pursue this route,
then what i have done is multiplie 2.3(t)*9.8(g)
which would give me an initial velocity of JUST enough to travel for 2.3s before beginning the return
is it really this simple??

Answer 2

for objects in free fall
... time up equals time down

decelerating on the way up
... accelerating on the way down

Answer 3

yes ... this is a simple "trick" question