The fastest
• A meteor enters the Earth's atmosphere at 60 km/sec.
• A jetliner cruises at 900 km/h.
• The space shuttle hurtles through space at 8000 m/sec.
• Sound travels 20,600 meters in one minute.
Which of the above is fastest?
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changing all of them into km/h:
1.A meteor enters the Earth's atmosphere at 60 km/sec
= 216,000 km/h.........................................[3600 x 60 km=216000 km /h as 1 hour =3600 seconds]
2.A jetliner cruises is at 900 km/h.
3.The space shuttle hurtles through space at 8000 m/sec
= 28,800 km/h.
4.Sound travels 20,600 meters in one minute
= 20.6 km/min = 1,236 km/h.
so , the meteor is fastest.