1. The problem statement, all variables and given/known data Stone with weight Q=20N falls from height h=5m and goes delta l =5 cm under surface.What is the avarage force of hit ? 2. Relevant equations 3. The attempt at a solution is this correct way to solve it mgh=F*delta l F=mgh/delta l=(20*9.81*5)/5 =196.2N correct ?