A satellite moves in a circular orbit around earth. Its speed is constant.
The only force that acts on the satellite is Earth's gravitational force which points directly toward Earth's centre. Which one of the following statements is true as the satellite moves from point A to point B in the orbit?

Question

A satellite moves in a circular orbit around earth. Its speed is constant.  
 The only force that acts on the satellite is Earth's gravitational force which points directly toward Earth's centre. Which one of the following statements is  true  as the satellite moves from point  A  to point  B  in the orbit?

Answer

The work done on the satellite by the gravitational force is zero for the motion from A to B.

Answer

The velocity of the satellite remains unchanged as it moves from A to B.

Answer

The gravitational potential energy of the satellite decreases as it moves from A to B.

Answer

The work done on the satellite by the gravitational force is negative for the motion from A to B.

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A satellite moves in a circular orbit around earth. Its speed is constant. Th...

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