A Rifle Is Aimed Horizontally At A Target 30m Away. The Bullet Hits The Target 1.9cm Below The Aiming Point. (A) What Is The Bullet's Time Of Flight? (B) What Is The Muzzle Velocity?

Answer 1

time to fall 1.9cm:
h=1/2 g t^2, or t= sqrt(2h/g)=sqrt(.028/9.8) sec = .0534sec
speed= distance/time=30m/.0534=562m/s

Answer 2

I can not solve this problem