A bullet is fired from a rifle, emerging at 340 m/s. It strikes a sandbag some distance away, having lost 10% of its velocity due to air resistance. if it penetrates the sandbag to a depth of 12 meters, how long did it take for the bullet to come to rest in the bag?

Answer 1

In the sandbag, the average velocity was 1/2 (340*.9)

time in the sandbag= distance/avgvelocity

solve for time.

Answer 2

6/1000s