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A mass having an initial kinetic energy of 40 Jules gets a potential energy of 10 Jules by reaching at a height h. What is the kinetic energy of the mass now?

A mass having an initial kinetic energy of 40 Jules gets a potential energy of 10 Jules by reaching at a height h. What is the kinetic energy of the mass now? Correct Answer 20 J

Law of conservation of energy states that total energy of the universe is always constant.

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