Explain feather and coin experiment (don't copy )​

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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this is a good question! i'll do some research and come back when i have the answer!

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2