What evidence would have been needed to contradict the theory of gravity before it was proven to be a law?(1 point)%0D%0AResponses%0D%0A%0D%0AExperiments demonstrating that objects of different masses fall at different rates in a vacuum.%0D%0AExperiments demonstrating that objects of different masses fall at different rates in a vacuum.%0D%0A%0D%0AConsistent measurements showing that the gravitational constant varies significantly on Earth.%0D%0AConsistent measurements showing that the gravitational constant varies significantly on Earth.%0D%0A%0D%0AObservations of objects floating upwards without any external force.%0D%0AObservations of objects floating upwards without any external force.%0D%0A%0D%0ADiscovery of a force stronger than gravity that acts universally on all matter.

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Answer 1

Observations of objects floating upwards without any external force.