The earth exerts the necessary centripetal force on an orbiting satellite to keep it moving in a circle at constant speed. Which statement best explains why the speed of the satellite does not change although there is a net force exerted on it?

The acceleration of the satellite is zero m/s² .

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The centripetal force is always perpendicular to the velocity.

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The centripetal force has magnitude mv ² /r

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The centripetal force is cancelled by the reaction force.

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Solution

The correct option is B
The centripetal force is always perpendicular to the velocity.

The centripetal force is always perpendicular to the velocity because of which the speed of the satellite does not change although there is a net force exerted on it.

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The earth exerts the necessary centripetal force on an orbiting satellite to keep it moving in a circle at constant speed. Which statement best explains why the speed of the satellite does not change although there is a net force exerted on it?

The correct option is B The centripetal force is always perpendicular to the velocity.The centripetal force is always perpendicular to the velocity because of which the speed of the satellite does not change although there is a net force exerted on it.

The correct option is B
The centripetal force is always perpendicular to the velocity.

The centripetal force is always perpendicular to the velocity because of which the speed of the satellite does not change although there is a net force exerted on it.