Question

a bullet of mass 40kg traveling with a velocity of 18m/s penetrates a thin wall and is brought to rest in 0.06s. find the depth of penetration and the average retarding force of the wall

Answer 1

Answer:

HEY MATE HERE IS YOUR ANSWER

Mass of the bullet = 40Kg

Initial velocity = 18m/s

Final velocity = 0

Time = 0.06sec

Accleration = v - u/t

= 0 - 18/0.06

= 300m/s^2

Retardation = -(a) = -(-300) = 300m/s.

We know that Retarding Force =

Mass × Retardation

= 40×300 = 12000N

Retarding force of the wall = 12000N.