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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• Nov 5th, 2007

5 m/sec

pratibha

• Nov 5th, 2007

5 m/sec

aviiking Profile Answers by aviiking

• May 14th, 2008

converting 72kmph in m/sec we get 20m/sec
so 25-20=5sec/m

anu1985 Profile Answers by anu1985

• Jun 2nd, 2008

189km/hrs

detallica Profile Answers by detallica

• Jun 3rd, 2008

72 km/hr == 20 m/sec .

so the diff is 25-20== 5m/sec

rssr_sy Profile Answers by rssr_sy

• Jun 17th, 2008

18km/hour

sindhurav Profile Answers by sindhurav

• Jun 30th, 2008

20 m per sec

Arunjhakhar Profile Answers by Arunjhakhar

• Jul 13th, 2008

5 m/s

Himanshu Ashwani Profile Answers by Himanshu Ashwani

• Oct 16th, 2008

A is travelling at 72km/hr = 72*1000/3600 m/sec = 20 m/sec
B is travelling at 25m/sec= 25*3600/100 km/hr =90 km/hr
ANS-difference  5 m/sec,18 km/hr

tessiththomas Profile Answers by tessiththomas

• Dec 3rd, 2008

72 km/hr is 20m/s

Difference is 5 m/s

tarun85 Profile Answers by tarun85

• Jan 30th, 2009

5 m/sec..B is 5m/sec faster then A

tiru5796 Profile Answers by tiru5796

• Jun 8th, 2009

72kmph=72*1000m/60*60sec=20m/sec->A.
B->25m/sec
B-A=5m/sec

bharathfeb Profile Answers by bharathfeb

• Jul 7th, 2009

A is travelling at 72 k/h [Given]

=> A is travelling at 72*5/18 m/s = 20 m/s

B is travelling at 25 m/s [Given]

Therefore, the difference in their speed is 5 m/s

sudipsinha123 Profile Answers by sudipsinha123

• Jul 13th, 2009

(1 km/hr = 5/18 mper sec)
so that, 72 km/hr=20mtr/sec
A's speed will be 20m/sec and B's speed will be 25 m/sec

hence the diff.of speed between them will be of 5 m/sec

Amit Shakya Profile Answers by Amit Shakya Questions by Amit Shakya

• Aug 25th, 2009

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

kowsimathi Profile Answers by kowsimathi

• Nov 29th, 2009

Change the meters into kilometer and sec into hrs after that equalize these two answers.

ayush_gupta Profile Answers by ayush_gupta

• Dec 30th, 2009

1 meter/sec is the difference b/w the speeds

dinesh_madhu623 Profile Answers by dinesh_madhu623

• Feb 11th, 2010

when 72 converted to m/s becomes 20
and 25-20 = 5

kiruthikaravisankar Profile Answers by kiruthikaravisankar

• May 15th, 2010

72 km/hr = 72* (5/18) m/sec = 20 /sec
so difference is 25 - 20 = 5 m/sec

sreeleshsasi Profile Answers by sreeleshsasi

• Jul 17th, 2010

SPEED OF B= 25*60*60/1000=90km/hr
SPEED DIF.= 18

mguhan89 Profile Answers by mguhan89

• Aug 14th, 2010

To convert km/hr to m/s use 5/18

72*5/18=20m/s
25-20=5m/s

coolabhi Profile Answers by coolabhi

• Sep 6th, 2010

5m/sec...

shikha

• Sep 26th, 2011

1 m/s

jeevan ambati

• Aug 30th, 2016

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 )  