Move with constant velocity in Relative mode

[athos_k]

Hi
1) I'm using a Relative move mode with a Bezier spline path. Is there any way I can remove the ease In & out of the move mode?
Or if you have a thought about this:
2) I have multiple objects that use paths and all of them need to be at the final position of the path at the same time, no matter the length of the path etc. 

e.g. 
obj 1 has path length of 10
obj 2 has path length of 20

both objects need to be at the end of the paths in 2 seconds.

I can achieve that using relative mode but I can't use the ease in & out it produces

Thanks