The bullet strikes a block of wood which exerts, on average, a force of 50,000 N opposing the motion of the bullet. How far does the bullet penetrate?

  

Retardation:

If the velocity is decreased with respect to time, the value of acceleration will be negative. This negative value of acceleration is known as retardation. It is also called deceleration. The force caused for retardation is called retarded force.
 

Initial m=25 g v = 350 m/s System/Flow Final v=0 Ek E Eel Ek Eg Eel Edis Initial Final