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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?

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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) 10 J

(b) 20 J

(c) 30 J

(d) 40 J

I got this question in semester exam.

The origin of the question is Energy Conservation in section Miscellaneous of Chemical Process Calculation

1 Answer

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Best answer
Right choice is (b) 20 J

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

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