If a body of mass 200 g falls from a height 200 m and its total potential energy is converted into kinetic energy at the point of contact of the body with earth surface, then what is the decrease in potential energy of the body at the contact? (Take g = 10 ms'2)

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If a body of mass 200 g falls from a height 200 m and its total potential energy is converted into kinetic energy at the point of contact of the body with earth surface, then what is the decrease in potential energy of the body at the contact? (Take g = 10 ms'2)