I feel I am missing a key intuitive insight into understanding a problem like as follows:

enter image description here

(Sorry for rough drawing) The system above consists of a hammer, floor, and a ball in between those two. When the hammer strikes the ball with F_h, there is an equal and opposite normal reaction F_n.

What would be the resultant force or the force experienced by the ball?

For context: This intuitive discord I'm feeling comes originally from this problem: enter image description here

^ We are asked to find the "Gripping force at B in terms of the applied force F"

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    $\begingroup$ 2 opposite and equal forces cancel each other out so there is no net force $\endgroup$ – Adrian Howard Oct 6 '19 at 3:51
  • $\begingroup$ Would that be the same for the pliers problem asking for the grip force at B? $\endgroup$ – Devansh Shah Oct 6 '19 at 4:47
  • $\begingroup$ the normal force on each side would give B no acceleration, only static friction to hold B. You should read en.wikipedia.org/wiki/Force#Equilibrium $\endgroup$ – Adrian Howard Oct 6 '19 at 7:11
  • $\begingroup$ as for the hammer and normal force, there is no acceleration, only mechanical stress. Read the third paragraph at en.wikipedia.org/wiki/Force $\endgroup$ – Adrian Howard Oct 6 '19 at 7:17