Find the magnitude f of the force that the wooden block exerts on the nail, assuming that this force is independent of the depth of penetration of the nail into the wood. you may also assume that v0≫2gl−−−√, so that the change in the hammer's gravitational potential energy, as it drives the nail into the block, is insignificant. express the magnitude of the force

The answer would be (M * v_0^2) / (2L) 

The reason behind this is explained by the work theorem:

Kf – Ki = -.5Mv_0^2 
W = -FL 
Kf – Ki = W consulting to work energy theorem. This specifies that the alteration in the kinetic energy of a particle is equivalent to the whole work done on that particle through all the forces that act on it. 
To make things easier to find that F = (M*v_0^2)/2L 

i dont know but

explanation:

whoever your teacher is, deserves a raise for using pokemon as an example

well, you would divide 135 by 33 to get your answer. then that is how many seconds it would take. boardman should fly about 132 m or 4.090909090909091 seconds.