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A girl of mass 40kg jumps …

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A girl of mass 40kg jumps with a horizontal velocity of 5m/s onto a stationary cart with frictionless wheels. The mass of cart is 3kg wha

Posted by Aanya Jain 3 years, 8 months ago

CBSE > Class 09 > Science

1 answers

Virat Jaat 3 years, 8 months ago

Given : Mgirl=40 kg ugirl=5 m/s Mcart=3 kg Initial velocity of cart ucart=0 Let the final velocity of cart be V. Applying conservation of linear momentum : Pi=Pf Or Mgirlugirl+Mcartucart=(Mgirl+Mcart)V Or 40×5+3×0=(40+3)V ⟹ V=43200 m/s

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