physics

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How high will a 1.85 kg rock go if thrown straight up by someone who expends 80.0 J of energy on it?

  • physics -

    Kinetic energy at ground = 80

    Kinetic energy at max height = 0
    so
    Potential energy at max height = 80
    so
    m g h = 80

    h = 80/(1.85*9.81)

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