Answer:
A British scientist Robert Boyal performed an experiment about a feather and coin.
firstly he dropped a coin and a feather simultaneously ( together) in a jar in which the coin reached the bottom first .
again ,
he removed the atmosphere inside the jar by vaacum pump and then he again dropped the feather and coin simultaneously . now both the coin and feather reached the bottom together .
conclusion:
the acceleration produced on a body is the same for all the bodies and it does not depend upon the mass of the falling body.
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