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. A ball of mass 2 kg and another of mass 4 kg are dropped together from a 60 feet tall buildir.After a fall of 30 feet each towards the earththeir respective kinetic energies will be in theratio of: (AIPMT 2004; Manipal 2007) |
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Answer» 1:2Explanation:v=√u^2+2asu=0v=√2asv=√2x10x30=√600E(KINETIC)=1/2 m v^21st body=1/2 X 2 x (√600)^22ND body=1/2 x 4 x (√600)^2ratio= 600/12001:2 |
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