physics collision

I have my Acorn(coin) sprite that the player collects and it has physics behavior on it. So when the player hits the Acorn it actually makes the player stutter for a second before its collected...is there a well to exclude a sprite from reacting to another sprites physics? if thats the case?

Yes, there's an action called "Enable/Disable Collision" for objects with physics

Its still stuttering, not sure if it has to do with the Player having its speed reduced every time it collides with the Acorn? or maybe I just didnt disable the physics coll right?

dwbailey.com/images/squirrelnutsSatNight.capx

dwbailey.com/images/SquirrelNutsSatNight

and here is the game so far..

i had to disable the solids initial state of my acorn for the physics to not affect my player.

fixed)