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An object of mass m and velocity u has kinetic energy 200 J. Find the new kinetic energithe mass of the object becomes double and velocity still remáins the same? |
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Answer» Let the k.e. in first case be xx = 1/2*m*v^2=200jin second caselet the kinetic energy be x'v'=vm'=2mx'= 1/2*2m*v^2x'= 2(1/2*m*v^2)x'=2(x)x'=2*200jx'=400j |
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