The bullet from a rifle travels at a speed of 3*10^4 cm/s.Work out the length of time in seconds taken for the bullet to hit a target 54m away.

The distance of the terget =
54meter.

Speed of the bullet =
3*10^4cm

Time taken to by the bullet =  distance of the target
/speed of the bullet. But here the speed of the bullet is given in centimeter per second. So we
have to convert this into meter/second  as the distance is in meter. For this we have to multiply
the speed of the bullet by 0.01.

 Therefore the speed of the bullet
in m/s = 3*10^4*0.01 = 3*10^2 m/s.

Therefore the time taken by the
bullet to reach the target = 54/3*10^2 s  = 0.18 seconds.

Therefore
the bullet takes 0.18 seconds to reacg the target.