In a Ballistics Test, a 28-G Bullet Pierces a Sand ${~cm}$

Multiple Choice

In a ballistics test, a 28-g bullet pierces a sand bag that is 30 ${~cm}$ thick. If the initial bullet velocity was 55 ${~m} / \mathrm { s }$ and it emerged from the sandbag moving at 18 ${~m} / \mathrm { s } \text {, }$ what was the magnitude of the friction force (assuming it to be constant) that the bullet experienced while it traveled through the bag?

A) 130 N
B) 38 N
C) 13 N
D) 1.3 N