Physics

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Gravitaton

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10 questions

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  • 1. Multiple Choice
    45 seconds
    1 pt
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    What is gravitational force?

    Gravitational force is a force that attracts any two objects with mass.

    Gravitational force is a force that attracts any two objects with velocity.

    Gravitational force is a force that attracts any two objects with acceleration.

    Gravitational force is a force that attracts any two objects with weight.

  • 2. Multiple Choice
    30 seconds
    1 pt

    which are the following is Newton’s Law of gravitation ?

    W=GMmrW=\frac{GMm}{r}

    F =GMmr2F\ =\frac{GMm}{r^2}

    V =GMrV\ =\sqrt{\frac{GM}{r}}

    g= GMrg=-\ \frac{GM}{r}

  • 3. Multiple Choice
    30 seconds
    1 pt

    What are the units for Gravitional Field strength,  ag =GMr2a_g\ =\frac{GM}{r^2}  .Give two of them...

     N kg 1N\ kg\ ^{-1}  

     J kg 1J\ kg\ ^{-1}  

     m s 2m\ s\ ^{-2}  

     m s 1m\ s\ ^{-1}  

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