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A ball is dropped from a satellite revolving around the earth at a height of 120 km. The ball will:

1. continue to move with same speed along a straight line tangentially to the satellite at that time
2. continue to move with the same speed along the original orbit of satellite
3. fall down to earth gradually
4. go far away in space

Correct answer: continue to move with the same speed along the original orbit of satellite

Solution

The ball, when dropped, will have the same tangential velocity as the satellite due to inertia. Hence, it will continue to move along the same orbit as the satellite.

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