UNIVERSE
SATELLITESICY BODIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The Earth moves around the Sun in a circular orbit with a radius of 1.5 × 108 km. What is the Earth’s approximate speed?
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1.5 × 103ms-1
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5.0 × 103ms-1
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1.0 × 104ms-1
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3.0 × 104ms-1
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Explanation:
Detailed explanation-1: -The earth moves round the sun in a near circular orbit of radius 1.5 × 10^11 m .
Detailed explanation-2: -As schoolchildren, we learn that the earth is moving about our sun in a very nearly circular orbit. It covers this route at a speed of nearly 30 kilometers per second, or 67, 000 miles per hour.
Detailed explanation-3: -How fast does the Sun move due to the Earth? Now we know the radius of the Sun’s orbit about the centre of mass we can find it’s speed using the simple formula: speed = distance ÷ time.
There is 1 question to complete.