At school we have a problem to solve but i dont know how to solve this problem.(adsbygoogle = window.adsbygoogle || []).push({});

Here is the condition:"Ball is throw vertical upward with inceptive speed v0.Of what height h the kinetic energy of the ball decrease two times? Resistance of the air is ignored." Im sorry if dont write it right but i dont know english very good.I need help please if anyone can help write the solution of the problem.

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# One Physic Problem Please Help

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