<PRE><B>Question 488550</B>
a train travels at the rate of 120 km per hour
What is its speed in meters per second?
:
multiply the km/hr times 1000 to get meters, divide no. of sec in an hour to get  per sec
{{{(1000*120)/3600}}} = 33.333 meter/sec
:
:
What is its speed in meters per minute? 
The same except you divide by the number minutes in an hr
{{{(1000*120)/60}}} = 2000 meter/min</PRE>