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Objective: To use Newton’s law of universal gravitation to predict the effect of varying mass and varying separation distance upon the gravitational force between two objects. If you miss a question, then you will eventually be given a very similar question. You can use the Help button at any time. 
Universal Gravitation
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Mass Attraction 5 Questions The effect of mass on gravity force.
Pick from among the three activities -  Mass Attraction, Diluted by Distance, and Putting it All Together.
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Diluted by Distance 5 Questions The effect of separation distance on gravity force.
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Putting it All Together 5 Questions The effect of both mass and separation distance on gravity force.
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Universal Gravitation
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