Question 1151444
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(1)  To find the time (to find "how many seconds will it take"),


     divide the distance by the speed; in other words, divide 4500 meters by 2.5 meters per second.



(2)  2.5 m/s = {{{(2.5*3600)/1000}}} kilometers per hour.


      Remember (!) :   1 hour = 3600 seconds.

                       1 kilometer = 1000 meters.
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