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Gravity quiz

Every question below is derived from a reviewed claim about gravity, with a real explanation shown once you submit.

ExplorerQuestion 1 of 4

If you drop a hammer and a feather at the same time with no air resistance, they hit the ground at the same time.

InvestigatorQuestion 2 of 4

According to Newton's law of universal gravitation, what happens to the gravitational force between two masses if the distance between them doubles?

InvestigatorQuestion 3 of 4

What is standard gravity g₀ (acceleration due to gravity at Earth's surface), in m/s², as exactly defined by the 3rd CGPM in 1901? (2 decimal places)

ScientistQuestion 4 of 4

What is the CODATA recommended value of the gravitational constant G, in units of ×10⁻¹¹ m³kg⁻¹s⁻²? (2 decimal places)