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A cannonball of mass 6.09 kg is shot from a cannon at an angle of 47.18° relative to the horizontal and with an initial speed of 48.90 m/s. As the cannonball reaches the highest point of its trajectory, what is the gain in its potential energy relative to the point from which it was shot?

  • physics -

    h =vₒ²sin²α/2g
    ΔPE= m•g•h = m•g •vₒ²sin²α/2g

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