A bullet fired into a fixed target loses half of it's velocity in penetrating 15cm.How much further it will penetrate before coming to test? If you answered this I will mark as brilliant

A bullet fired into a fixed target loses half of it's velocity in pene

1.	A bullet fired into a fixed target loses half of it's velocity in penetrating 15cm.How much further it will penetrate before coming to test? If you answered this I will mark as brilliant
Answer» Applying the Equation of motion for the initial velocity of the bulletv 2 =u 2 +2AS a=− 40u 2 Applying the equation of motion for the bullet after penetrating 15cmv 2 =u 2 +2aSHere, u=0 where the bullet is at the restThe initial velocity of the bullet after penetrating 15cm is 2u Applying the data in the equation of motionWe getv 2 =u 2 +2aS⇒ 20u 2 S= 4U 2 ⇒S=5cm