physics

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An athlete thtrew a short put of mass7.52kg through a distance of 24m when we projected a short put at angle of 30. Assuming there is no air resistance, what is the initial kinetic energy of the athlete.

  • physics -

    The range of projectile is
    L = v^2•sin2α/g,
    v^2 = L•g/sin2α,
    KE = mv^2/2 =m• L•g/2•sin2α

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