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A penny and a brick, for example, will fall at the same speed.
That means large objects like galaxies would not all fall at the same speed.
Galileo first demonstrated that falling bodies of different weights would fall at the same speed (if you account for the drag resistance of air).
If there was no air in the way, gravity would make a cloud droplet and a lump of lead fall at the same speed.
Galileo's intuition may have been correct, but it was still clearly answerable to direct observational tests which might in principle have falsified it: will a body indeed still fall at the same speed when it is tied to another?
Similar(55)
It accounted naturally, in a way that Newton didn't, for why everything falls at the same speed, and why the force obeys an inverse square law.
Now both stock and bond prices fall precipitously, indeed so dramatically that they might seem to be falling at the same speed.
The reason is that both he and the elevator accelerate downward at the same rate and so fall at exactly the same speed; hence, short of looking outside the elevator at his surroundings, he cannot determine that he is being pulled downward.
"I told him I imagined it as a kind of shot going up into the air, and then it starts to fall back to earth at the same speed.
Vehicles that fall in the same speed group belong to the same cluster.
Meteorites have decelerated to a free-fall velocity by the time they hit the earth, travelling at the same speed as a rock thrown from a tall building.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com