physics, please help

https://www.dropbox.com/s/lqw40wo7o5vjuuv/Screenshot%202015-12-19%2013.15.44.png?dl=0

Question

physics, please help

https://www.dropbox.com/s/lqw40wo7o5vjuuv/Screenshot%202015-12-19%2013.15.44.png?dl=0

irishboy123 · Answer

your thoughts?

christos · Answer

my thoughts are that I should find the hypotynus , which I did, and I am doing it wrong according to the solution which is doing something else . Fun part is that professor usually makes mistakes and I wonder whos correct

christos · Answer

@IrishBoy123

irishboy123 · Answer

isn't it travelling at the same velocity as the train if it is falling vertically in the train's reference frame?!?!

irishboy123 · Answer

ie so your approach sounds good

christos · Answer

can you please tell me how would you solve it @IrishBoy123  ?

christos · Answer

It would really clear things out seeing your outcome to this

irishboy123 · Answer

$v = \dfrac{30}{\sin 70}$

christos · Answer

why sin

christos · Answer

and not cos

christos · Answer

dont you want to find the hypotinus

irishboy123 · Answer

|dw:1450526096027:dw|

christos · Answer

how about |dw:1450526216272:dw|

irishboy123 · Answer

it's 70 with the vertical as observed in by someone on ground

christos · Answer

::felling stupid:: thanks

irishboy123 · Answer

cool!