Answers

2015-05-10T15:47:28+05:30
GIVEN ;-

⇒ Mass of the bullet = 10 g

⇒Velocity of the bullet = 150 m / s

⇒ Tie taken by the bullet to take rest when it strikes the wooden block = 0.03 s

TO FIND ;-

⇒ Distance of the penetration of the bullet = ?


SOL :-

Distance is also reffered to Displacement.


Displacement is the shortest distance travelled by an object.


Therefore ,

          ⇒Displacement                              = Velocity × Time 
                      
                       where average velocity is = 
(u + v) / 2

⇒ So displacement    =  [(u + v) / 2] × time
                                
                                 = [(150 + 0) / 2] × 0.03
         
                               
 = 2.25 m

Distance of the penetration of the bullet is 2.25 m

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