Short answer type questions
1. An artificial satellite travels at a speed of 20,000 m/s. Express in km/h
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1 km=1000m
1 hour= 3600 sec
So,
20000/1000/3600
20000*18/5
72000 km/h
1 hour= 3600 sec
So,
20000/1000/3600
20000*18/5
72000 km/h
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