Getting Point A and B shouldn’t be a problem… problem is showing this trajectory depending on the distance character throwing object. Any way to achieve this ??
Maybe we can use “Single trace by channel” to get points A and B. but how to draw this curve in between?
What about using Spline of some sort… ?? there must be some way!!
Once again figured it out myself! 
used beam particle system to make it!
Hi VeerChidar, can you please elaborate on what solutions did you found for the trajectory? Thanks in advance.