If A is travelling at 72 km per hour on a highway. B is travelling at a speed of 25 meters per second on a highway. What is the difference in their speeds in m/sec.

Step-1 Convert the speed of A in meter per second. As 1km=1000meters and 1hour = 3600 second => 72km/hour =72x1000 60x60 =20meter/sec Step-2 Now we can substract the speeds of A and B Difference in speed= Speed of B- Speed of A = 25-20 =5meter per second Hence speed of B is more than A by 5m/s

If the speed of B is converted in Km/hour it would be 80 km/hour... so the difference would be 80-72=8 km/hour or 8 km/hour

jeevan ambati

Aug 30th, 2016

When we convert 25 m/sec into km/ hour we get 90 km/hour so the difference in their speeds would be
90-72=18 km/hour.. or 5 m/sec (18 km/hour converted in m/sec )

## If A is travelling at 72 km per hour on a highway. B is travelling at a speed of 25 meters per second on a highway. What is the difference in their speeds in m/sec.

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Answered by: pratibha

5 m/sec

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