A person stands on the balcony and pushes the three balls straight down and straight up at the same

Updated on Balcony 2024-07-01
1 answers
  1. Anonymous users2024-01-24

    Since the resistance of the air is not taken into account, the mechanical energy of the three balls is conserved, because their initial velocity is the same, and they are thrown from the same position, and finally they all fall on the ground, so their initial and final positions are the same, and the initial kinetic energy is also the same, and it can be seen from the conservation of mechanical energy, and the final kinetic energy is also the same, so the magnitude of the final velocity is the same

    So choose D

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