EASY
Earn 100

Choose the wrong statement.
(a)Retardation is a vector quantity.
(b)Acceleration due to gravity is a vector quantity
(c) Average speed is a vector quantity.
(d) Displacement is a vector quantity.

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Important Questions on Motion
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What is an artificial satellite? Name any two types of artificial satellite and state their functions.

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Name the kind of motion of the stone.

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What is the direction of this force? Draw it in your answer sheet.

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EASY
Is a satellite moving around the Earth in a circular orbit accelerated? Explain.


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MEDIUM
An artificial satellite is moving in a circular orbit of radius . Calculate its speed if it takes hours to revolve around the earth.

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Name the force that keeps the stone in its path.

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HARD

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Is uniform circular motion an example of accelerated motion? Explain.

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The earth revolves around the sun in an orbit of radius once in a year. Calculate the centripetal acceleration of the earth.

