9th Class Science Gravitation and Floatation Question Bank Gravitation

  • question_answer
    A ball is dropped from a spacecraft revolving around the earth at height of 120 km. What will happen to the ball?

    A)  It will continue to move with the same speed along the original orbit of spacecraft  

    B)  It will move with the same speed, tangentially to the spacecraft

    C)  It will fall down to the earth gradually

    D)  It will go very far in space

    Correct Answer: A

    Solution :

     When an object is dropped from a satellite, its velocity will be same as the satellite.                 \[v=\sqrt{\frac{GM}{R}}\]


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