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What is a gravitational force?
What are the two important effects of gravity?
What is mass?
What is weight?
Why does the gravitational field strength vary with location?
What does the weight of an object depend on?
What is weight measured in?
What is its centre of mass?
What is weight measured using?
What is mass measured in?
What are mass and weight?
Equation:
Who discovered gravity?
What is a force?
What other forces act on moving objects?
