Doubt by Atul Mishra

a bullet fired into a fixed target losse half of its velocity after pentrating 3cm.how mch further it will penratate before comimg rest 

Answers

Answer by Abhishek Sir-NeetPrep

Using first information, use 3rd equation of motion and obtain retardation(a). Use this value of a for 2nd case when velocity changes from v/2 to zero