//Pilot and his bomber
//refer fig.13.3
h=2000  //m
u=(600*1000)/(60*60)  //m/sec
//initial velocity in vertical direction
//gravitational acceleration=9.81 m/sec^2
//if t is the time of flight
t=sqrt((2000*2)/(9.81))  //sec
//during this period horizontal distance travelled by the bomb must be  (d)
d=u*t  //m
printf("Bomb should be released at %.2f m from the target",d)