I am having problems on how to find the J components in this problem. http://www.mustangmods.com/data/16002/dynamics1.jpg I know theI component of the velocity is 2i and that the j component is -1.296j but i don't know how to get this part. I thought u would plug the didstance d into the equation of the parabola but that didn't work out. I also dont' know how to find the acceleration normal to the parabolic surface. I beleive the acceleration is .6i +9.21j in which i found the j vector by 9.81-.6.