Question

How will the depth of penetration into the wall change if a bullet of mass 5 g strikes against it with a velocity of 40 m/s?

Answer 1

Explanation:

NC DM gf DM NC DJ kg DJ kg cm NC DJ kg gf DJ

Answer 2

In the solution given assumptions are

1: the wall is uniform

2: it offers same retardation force throughout its volume

the negative sign in acceleration is show that the acceleration is opposite in direction to the velocity of bullet.