. A hammar of mass 1 kg strike on the head of a nail
with a velocity of 2 ms-1 . It drives the nail 0.01 m into a wooden block. Find the force applied by the hammer and the time of impact.
Using the first and third equations of motion,
3rd equation of motion,
Final velocity (v)=0( nail does not move further)
Force of impact i..e.applied by hamme,r
=(1 kg) (200 m/s2)
1st equation of motion
Hence, option A is correct, i.e.,200 N;10-2sec .