Yea I am getting about 1.43 which is what I originally got perhaps my webassign is just messed up and won't accept a good answer thanks for the help! :biggrin:
So 2.5 = -19.6t^2 or -.128 =t^2
so time = .35 or something? is that correct?
and is displacement negative on the way down?
The answer has to be somewhere around 1.4...am i hot or cold?
A man jumps to a vertical height of 2.5 m. How long was it in the air before returning to Earth?
here is what i got so far...
vi=0
v=0
x-xi=2.5
a=-9.8
that is for the man jumping upwards...I believe the up and down will be proportional so if I just double my answer in the end i should...