Posts by Chemistry By F.A.Khan
When someone drops a paper(lighter object) from certain height,it
When someone drops a paper(lighter object) from certain height,it reaches the ground by a wavy motion,,but in the case of a book(heavy object),the fal...
When someone drops a paper(lighter object) from certain height,it reaches the ground by a wavy motion,,but in the case of a book(heavy object),the fal...
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