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Work,Energy and Power
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[QUOTE="alijan kk, post: 5486082, member: 594928"] [h2]Homework Statement [/h2] A body of mass 2 kg thrown vertically with KE of 490 joules. If the acceleration due to gravity is 9.8 m/s^2 of the body becomes half its original value is given by: a.50 b.12.5 c.25 m d.10 m [h2]Homework Equations[/h2] PE=MGH K.E=1/2MV^2 PE=KE [h2]The Attempt at a Solution[/h2] K.E=P.E 490=MGH 490=2*9.8*H 490=19.6*H 490/19.6=H 25=H H=25 m is it right ? or we have to half the value. [/QUOTE]
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