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Mathematics 7 Online
OpenStudy (anonymous):

this is a math question:PERCENTAGE the kinetic energy of a body increses by 300% then the new momentum of the body increases by how much percent? u only need to know these terms k.e=1/2*m*v^2 momentum=m*v where k.e is kinetic energy v is velocity m is mass *****mass remains constant

OpenStudy (apoorvk):

okay so mass is constant. so basically the "v^2" quantity increases by 300%, that is (v')^2 = 4v^2 so, v' = 2v Now since "v" gets doubled. momentum "mv" also gets doubled. so, momentum increase by 100%.

OpenStudy (apoorvk):

here (v') is the new velocity.

OpenStudy (anonymous):

can u expalin why the second step?

OpenStudy (apoorvk):

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