Question

a car taken 20 min to cover a distance 18km. calculate its speed in km/h & m/s

Answer 1

Speed =Distance/Time
Therefore
Distance=18km
Time=20mins or 1200 sec
Speed=18/1200 or 0.015m/s or 54 km/h.
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Answer 2

speed of car is 54 km/h and 15 m/s