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Assuming the best high jump record from a standingposition in a school was 1.52 m, what initial velocity was needed for this jump? Neglect any sideways motion.

  • Physics - ,

    The minimum initial velocity will create at least the kinetic energy (1/2)mv² to equal the potential energy gained, mgh, where h is the height difference between the horizontal rod and the cg of the person from the ground.

    Make assumptions to the value of this difference, knowing that most high-jumpers put the body to a slant or even horizontal at the critical moment.

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