distance is 142km and time is 2hr find the speed in meter/sec
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Answer:
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Explanation:
speed = distance/ time
Distance km into m = 1 km = 1000m
= 142 km = 1000 X 142
= 1,42,000m
Time in hr into second = 1 hr = 3,600 sec
= 2 hr = 3,600 X 2
= 2 hr = 7,200sec
speed = distance/time
speed = 1,42,000/7,200
speed = 19.722
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