With one mighty swipe of his sword, the knight cut off the flying dragon's head. If the dragon's head weighed 56.7 kg, how much force was used by the head to fall to the ground?

The force used to fall by the head is

556.3N

Step-by-step explanation:

Given the the dragon's head has a mass m=56.7kg

Let us assume the acceleration due to gravity of the dragon's head is

9.81m/s^2

We know that the force

F=m*g

Substituting our data into the expression we have

F = 56.7*9.81

F = 556.2N