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A bullet of mass 20g has an initial speed of 1 m just before it starts penetrating a mud wall of thickness 20cm.  If the wall offers a mean resistance of 2.5 N, the speed of the bullet after emerging  from the other side of the wall is close to : 

(a)

0.4 m

(b)

0.7 m

(c)

0.3 m

(d)

0.1 m



Question ID - 51353 | SaraNextGen Top Answer

A bullet of mass 20g has an initial speed of 1 m just before it starts penetrating a mud wall of thickness 20cm.  If the wall offers a mean resistance of 2.5 N, the speed of the bullet after emerging  from the other side of the wall is close to : 

(a)

0.4 m

(b)

0.7 m

(c)

0.3 m

(d)

0.1 m

1 Answer
127 votes
Answer Key / Explanation : (b) -

=2aS

 v= m/s=0.7m/s

127 votes


127