Finding position from velocity with integration

[ana111790]

EDITED:

My answer was right, the answer of the software was wrong :D !

So this thread should be deleted.

THANKS!

 

[bp_psy]

position vector = [at - (bt^3)/3 + v_x(0)]i + [(ct^2)/2 + v_y(0)]j
position vector = [at - (bt^3)/3 + a]i + [(ct^2)/2]j
This however is the wrong answer and I don't know understand why?

out?

Your initial conditions for position are not your initial values for velocity.