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CBSE Class 9 Answered

2 balls are thrown vertically upward with their initial velocity 1:2.find the ratio of their matimum height  
Asked by Komal | 05 Sep, 2015, 07:05: PM
answered-by-expert Expert Answer

Hi Aryan,

begin mathsize 14px style It space is space given space that space straight u subscript 1 over straight u subscript 2 equals 1 half We space know space that space after space reaching space maximum space height comma space final space velocity space is space zero. So comma space we space have straight u equals square root of 2 gh end root Here comma space straight h space is space the space maximum space height space reached. For space both space balls comma space we space get space the space ratio space as straight u subscript 1 over straight u subscript 2 equals square root of fraction numerator 2 gh subscript 1 over denominator 2 gh subscript 2 end fraction end root equals square root of straight h subscript 1 over straight h subscript 2 end root therefore 1 half equals square root of straight h subscript 1 over straight h subscript 2 end root therefore straight h subscript 1 over straight h subscript 2 equals 1 fourth end style

Answered by | 07 Sep, 2015, 06:10: PM
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