A pile is driven into a pile with a hammer weighing 100 kg. Hammer speed at impact 3 m / s. Determine the average resistance force

A pile is driven into a pile with a hammer weighing 100 kg. Hammer speed at impact 3 m / s. Determine the average resistance force if in one blow the pile goes into the ground by 1 cm

Given
m = 100 kg
v = 3 m / s
d = 1 cm = 0.01 m
g = 10 m / s2
find Fc
decision
hammer energy at impact Wk = mv ^ 2/2
work of resistance force A = Wk = Fc * d
Fc = Wk / d = mv ^ 2 / 2d = 100 * 3 ^ 2 / (2 * 0.01) = 45,000 N = 45kN