Help me do some physics here if you may. I'll use 2 weird coins as an example.

Coin A weighs the same as Coin B. Coin B is slightly jello-like and has a slightly wider surface area than coin A, thus it is less dense. If I throw Coin A and B at you with the exact same force, is one going to do more damage than the other, or is it going to do the same amount of damage spread over a wide area? I also don't know if Coin B's consistency would affect any damage it could do. Please explain your answer, and thank you anon.