<PRE><B>Question 977308</B>
 A car is traveling at an average speed of 18 km/hr
(i) Express its average speed in m/sec.
Ans: 18(km/hr)*(1000 m/1 km)(1 hr/3600 sec) 
(18*1000*1)/(1*1*3600)(m/sec)
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= 5 m/sec
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(ii) Find the distance it travel in 3 hours.
Ans: 3(18 km/hr) = 54 km
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(iii) Find how far it travel in 25 seconds.
Ans: 25(5 m/sec) = 125 meters
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Cheers,
Stan H.
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